{ "title": "Unorganised dry cleaners use MTO and white | The Swiss Laundry", "description": "Most neighbourhood dry cleaners in India use MTO or white petrol — petroleum solvents that leave carcinogenic residue on fabric.", "keywords": "", "robots": "index,follow,max-snippet:-1,max-image-preview:large", "canonical": "https://www.theswisslaundry.com/blog-unorganised-dry-cleaners-mto-petrol-harm", "hreflangs": [ { "hreflang": "en-IN", "href": "https://www.theswisslaundry.com/blog-unorganised-dry-cleaners-mto-petrol-harm" }, { "hreflang": "en", "href": "https://www.theswisslaundry.com/blog-unorganised-dry-cleaners-mto-petrol-harm" } ], "og": { "type": "article", "title": "Unorganised dry cleaners use MTO and white petrol. Here is what that means for your skin. — The Record", "description": "Most neighbourhood dry cleaners in India use MTO or white petrol — petroleum solvents that leave carcinogenic residue on fabric. Here is what that means for the garments you wear.", "url": "https://www.theswisslaundry.com/blog-unorganised-dry-cleaners-mto-petrol-harm", "image": "https://www.theswisslaundry.com/images/og-default.svg", "image:width": "1200", "image:height": "630", "site_name": "The Swiss Laundry", "locale": "en_IN" }, "geo": { "region": "IN-WB", "placename": "Kolkata" }, "jsonLd": [ [ { "@context": "https://schema.org", "@type": "Article", "headline": "Unorganised dry cleaners use MTO and white petrol. Here is what that means for your skin.", "description": "Most neighbourhood dry cleaners in India use MTO or white petrol — petroleum solvents that leave carcinogenic residue on fabric. Here is what that means for the garments you wear.", "author": { "@type": "Organization", "name": "The Swiss Laundry", "url": "https://www.theswisslaundry.com" }, "publisher": { "@type": "Organization", "name": "The Swiss Laundry", "logo": { "@type": "ImageObject", "url": "https://www.theswisslaundry.com/images/favicon.svg" } }, "url": "https://www.theswisslaundry.com/blog-unorganised-dry-cleaners-mto-petrol-harm", "datePublished": "2026-06-10", "dateModified": "2026-06-10", "mainEntityOfPage": { "@type": "WebPage", "@id": "https://www.theswisslaundry.com/blog-unorganised-dry-cleaners-mto-petrol-harm" }, "keywords": "MTO dry cleaning India, white petrol dry cleaning harm, dry cleaning chemical safety India, unorganised dry cleaner India", "articleSection": "Safety", "wordCount": 1850 }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://www.theswisslaundry.com/" }, { "@type": "ListItem", "position": 2, "name": "The Record", "item": "https://www.theswisslaundry.com/blog" }, { "@type": "ListItem", "position": 3, "name": "Unorganised dry cleaners use MTO and white petrol. Here is what that means for your skin.", "item": "https://www.theswisslaundry.com/blog-unorganised-dry-cleaners-mto-petrol-harm" } ] }, { "@context": "https://schema.org", "@type": "LocalBusiness", "name": "The Swiss Laundry", "telephone": "+919836233354", "url": "https://www.theswisslaundry.com", "openingHours": "Mo-Sa 10:00-17:00", "priceRange": "₹₹", "aggregateRating": { "@type": "AggregateRating", "ratingValue": "4.5", "reviewCount": "200", "bestRating": "5" }, "address": { "@type": "PostalAddress", "streetAddress": "P-4 Kasba Industrial Estate, Phase III, E.M. Bypass (East)", "addressLocality": "Kolkata", "addressRegion": "West Bengal", "postalCode": "700107", "addressCountry": "IN" } }, { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "What is MTO and why is it used in dry cleaning in India?", "acceptedAnswer": { "@type": "Answer", "text": "MTO (Mineral Turpentine Oil) is a petroleum distillate. It is used by unorganised dry cleaners because it costs ₹50–80 per litre and requires no special equipment. Professional hydrocarbon solvent costs ten times more and requires enclosed machines costing ₹8–20 lakhs. In the absence of solvent regulation for small establishments in India, the economics favour MTO." } }, { "@type": "Question", "name": "Is dry cleaning with MTO or white petrol dangerous?", "acceptedAnswer": { "@type": "Answer", "text": "There is a genuine health concern. MTO and white petrol leave petroleum residue in fabric. This residue can absorb through skin during prolonged contact. The IARC classifies several petroleum distillate compounds as possible carcinogens. Professional dry cleaning with enclosed machines and proper solvent leaves no residue on garments." } }, { "@type": "Question", "name": "How do I know if my dry cleaner uses safe solvents?", "acceptedAnswer": { "@type": "Answer", "text": "Ask what solvent they use. Safe answers: hydrocarbon solvent, Perc, GreenEarth. Unsafe: petrol, white petrol, MTO, thinner, or inability to name the solvent. Also look for an enclosed drum machine — if you cannot see one, open-vat petroleum cleaning is happening." } }, { "@type": "Question", "name": "What solvent does The Swiss Laundry use?", "acceptedAnswer": { "@type": "Answer", "text": "Professional-grade hydrocarbon solvent in fully enclosed automatic machines since 2013. Solvent is recovered and recycled each cycle. No petroleum residue remains on garments after cleaning." } }, { "@type": "Question", "name": "Why does the smell of dry cleaned clothes matter?", "acceptedAnswer": { "@type": "Answer", "text": "A faint solvent scent that dissipates in 2–4 hours of airing is normal and harmless — it is residual vapour, not liquid residue. A strong petrochemical smell that persists after airing indicates MTO or petroleum solvent use, where liquid residue has soaked into the fabric fibres." } } ] }, { "@context": "https://schema.org", "@type": "SpeakableSpecification", "cssSelector": [ ".hero-summary", ".glance-points", ".faq-q" ] } ] ], "styleCss": "[data-reveal]{opacity:1!important;transform:none!important}\n/* NAV */\nnav{position:fixed;top:0;left:0;right:0;z-index:200;display:flex;align-items:center;justify-content:space-between;padding:0 3rem;height:70px;transition:background 0.5s,border-color 0.5s,box-shadow 0.5s;border-bottom:0.5px solid transparent}\nnav.on-dark{background:rgba(12,11,10,0.2);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border-bottom-color:rgba(255,255,255,0.07)}\nnav.on-light{background:rgba(245,240,232,0.97);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border-bottom-color:rgba(0,0,0,0.08);box-shadow:0 2px 28px rgba(0,0,0,0.07)}\n.nav-logo 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background-size:128px;mix-blend-mode:multiply}\n.skip-link{position:absolute;left:-999px;width:1px;height:1px;overflow:hidden}\n.skip-link:focus{left:1rem;top:1rem;width:auto;height:auto;padding:.5rem 1rem;background:var(--gold);color:var(--ink);z-index:9999}\n.seo-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}\n.scroll-bar{position:fixed;top:0;left:0;height:2px;background:linear-gradient(90deg,var(--gold),var(--gold-l));z-index:9999;width:0}\n[data-reveal]{opacity:0;transform:translateY(14px);transition:opacity .7s ease,transform .7s var(--ease)}\n[data-reveal].in{opacity:1;transform:none}\n@media(scripting:none){[data-reveal]{opacity:1!important;transform:none!important}}\n.btn{display:inline-flex;align-items:center;gap:.45rem;font-family:var(--ss);font-size:10px;font-weight:500;letter-spacing:.18em;text-transform:uppercase;border:none;cursor:pointer;text-decoration:none;transition:background .2s,transform .15s,box-shadow .2s}\n.btn svg{flex-shrink:0}\n.btn-g{background:var(--gold);color:var(--ink);padding:.8rem 1.8rem}\n.btn-g:hover{background:var(--gold-l);transform:translateY(-1px);box-shadow:0 4px 16px rgba(201,168,76,.3)}\n.btn-dk{background:var(--ink);color:var(--gold);padding:.85rem 2rem}\n.btn-dk:hover{background:#000}\n.btn-ol{background:transparent;color:rgba(245,240,232,.7);padding:.8rem 1.6rem;border:1px solid rgba(245,240,232,.22)}\n.btn-ol:hover{color:var(--cream);border-color:rgba(245,240,232,.5)}\n.btn-row{display:flex;gap:.6rem;flex-wrap:wrap}\n/* hero */\n.bsc-hero{min-height:100svh;background:var(--dark);display:flex;flex-direction:column;justify-content:flex-end;padding:0 8vw 5rem;position:relative;overflow:hidden}\n.bsc-hero::before{content:'';position:absolute;inset:0;pointer-events:none;\n background:radial-gradient(ellipse 60% 50% at 80% 30%,rgba(139,26,26,.08) 0%,transparent 60%),\n radial-gradient(circle,rgba(201,168,76,.04) 1px,transparent 1px);\n background-size:100% 100%,32px 32px}\n.bsc-bg-word{position:absolute;bottom:-0.1em;right:3vw;font-family:var(--s);font-style:italic;font-weight:300;font-size:clamp(130px,20vw,300px);line-height:1;color:transparent;-webkit-text-stroke:1px rgba(201,168,76,.06);pointer-events:none;user-select:none;z-index:1;letter-spacing:-.05em}\n.bsc-eyebrow{font-family:var(--ss);font-size:10px;font-weight:500;letter-spacing:.32em;text-transform:uppercase;color:var(--gold);display:flex;align-items:center;gap:.8rem;margin-bottom:1.8rem;position:relative;z-index:2}\n.bsc-eyebrow::before{content:'';width:24px;height:1px;background:var(--gold);flex-shrink:0}\n.bsc-h1{font-family:var(--s);font-style:italic;font-weight:300;font-size:clamp(44px,7vw,100px);line-height:.88;letter-spacing:-.04em;color:var(--cream);margin-bottom:2rem;position:relative;z-index:2;max-width:860px}\n.bsc-h1 em{font-style:normal;color:var(--gold)}\n.bsc-lead{font-size:clamp(14px,1.4vw,17px);font-weight:300;color:rgba(245,240,232,.6);line-height:1.85;max-width:540px;margin-bottom:2.5rem;position:relative;z-index:2}\n.bsc-hero-btns{position:relative;z-index:2}\n.bsc-strip{position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid rgba(201,168,76,.15);margin-top:4rem}\n.bsc-stat{padding:1.4rem 0;border-right:1px solid rgba(201,168,76,.1)}\n.bsc-stat:last-child{border-right:none}\n.bsc-stat-n{font-family:var(--s);font-style:italic;font-weight:300;font-size:clamp(18px,2.8vw,34px);color:var(--gold);display:block;line-height:1;letter-spacing:-.02em}\n.bsc-stat-l{font-family:var(--ss);font-size:9px;font-weight:300;letter-spacing:.18em;text-transform:uppercase;color:rgba(245,240,232,.35);display:block;margin-top:.3rem}\n/* def box */\n.bsc-def-sec{background:var(--cream);padding:6rem 8vw}\n.bsc-def-inner{max-width:860px;margin:0 auto}\n.bsc-def-box{border:1px solid rgba(201,168,76,.35);border-left:4px solid var(--gold);padding:2.2rem 2.5rem 2.2rem 2.2rem;background:var(--white);margin-bottom:2rem}\n.bsc-def-label{font-family:var(--ss);font-size:9px;font-weight:500;letter-spacing:.3em;text-transform:uppercase;color:var(--gold);display:block;margin-bottom:.8rem}\n.bsc-def-text{font-family:var(--s);font-style:italic;font-weight:300;font-size:clamp(17px,2.1vw,24px);line-height:1.55;color:var(--ink)}\n.bsc-def-text em{font-style:normal;color:var(--gold)}\n.bsc-def-source{display:block;margin-top:.9rem;font-family:var(--ss);font-size:10px;font-weight:300;letter-spacing:.1em;color:var(--muted)}\n.bsc-def-note{background:var(--off);padding:1.4rem 1.6rem;font-family:var(--ss);font-size:13px;font-weight:300;line-height:1.85;color:var(--muted)}\n.bsc-def-note strong{color:var(--ink);font-weight:400}\n/* body */\n.bsc-body{background:var(--off);padding:0 8vw 7rem;display:grid;grid-template-columns:220px 1fr;gap:5rem;align-items:start;max-width:1200px;margin:0 auto}\n.bsc-sidebar{position:sticky;top:90px}\n.bsc-sb-label{font-family:var(--ss);font-size:9px;font-weight:500;letter-spacing:.28em;text-transform:uppercase;color:var(--gold);display:block;margin-bottom:1.2rem}\n.bsc-sb-list{list-style:none;display:flex;flex-direction:column}\n.bsc-sb-link{display:block;font-family:var(--ss);font-size:11px;font-weight:300;letter-spacing:.06em;color:var(--muted);text-decoration:none;padding:.55rem 0 .55rem .9rem;border-left:2px solid rgba(26,25,24,.08);transition:color .2s,border-color .2s;line-height:1.4}\n.bsc-sb-link:hover,.bsc-sb-link.active{color:var(--ink);border-left-color:var(--gold)}\n.bsc-content{padding-top:5rem}\n/* clauses */\n.clause{margin-bottom:5rem;padding-bottom:5rem;border-bottom:1px solid rgba(26,25,24,.07)}\n.clause:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0}\n.clause-num{font-family:var(--s);font-style:italic;font-weight:300;font-size:clamp(44px,6vw,72px);color:rgba(201,168,76,.15);display:block;line-height:1;margin-bottom:.3rem;letter-spacing:-.04em}\n.clause-title{font-family:var(--s);font-style:italic;font-weight:300;font-size:clamp(24px,3vw,40px);color:var(--ink);line-height:1.1;margin-bottom:1.4rem;letter-spacing:-.02em}\n.clause-title em{font-style:normal;color:var(--gold)}\n.clause-body{font-family:var(--ss);font-size:14px;font-weight:300;line-height:1.95;color:var(--muted)}\n.clause-body p{margin-bottom:1.1rem}\n.clause-body p:last-child{margin-bottom:0}\n.clause-body strong{color:var(--ink);font-weight:400}\n.clause-body a{color:var(--gold);text-decoration:none;border-bottom:1px solid rgba(201,168,76,.3);transition:border-color .2s}\n.clause-body a:hover{border-color:var(--gold)}\n.fact-box{margin:1.8rem 0;padding:1.4rem 1.6rem;border-left:3px solid var(--gold);background:var(--gold-a);font-family:var(--ss);font-size:13px;font-weight:300;line-height:1.75;color:var(--ink)}\n.fact-box strong{font-weight:500}\n.warn-box{margin:1.8rem 0;padding:1.4rem 1.6rem;border-left:3px solid var(--pink);background:rgba(192,65,90,.06);font-family:var(--ss);font-size:13px;font-weight:300;line-height:1.75;color:var(--ink)}\n.warn-box strong{font-weight:500;color:var(--pink)}\n/* banarasi variety grid */\n.variety-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:rgba(26,25,24,.08);margin:1.8rem 0}\n.variety-card{background:var(--white);padding:1.8rem 1.6rem;transition:background .2s}\n.variety-card:hover{background:var(--cream)}\n.variety-name{font-family:var(--s);font-style:italic;font-weight:300;font-size:clamp(17px,2vw,23px);color:var(--ink);display:block;margin-bottom:.25rem}\n.variety-weave{font-family:var(--ss);font-size:9px;font-weight:300;letter-spacing:.18em;text-transform:uppercase;color:var(--gold);display:block;margin-bottom:.5rem}\n.variety-care{font-family:var(--ss);font-size:12px;font-weight:300;color:var(--muted);line-height:1.7}\n.variety-care strong{color:var(--ink);font-weight:400}\n/* stain table */\n.stain-table{width:100%;border-collapse:collapse;font-family:var(--ss);margin:1.8rem 0}\n.stain-table th{font-size:9px;font-weight:500;letter-spacing:.18em;text-transform:uppercase;padding:.8rem 1rem;background:var(--ink);color:rgba(245,240,232,.6);text-align:left}\n.stain-table th:first-child{color:var(--gold-l)}\n.stain-table td{padding:.75rem 1rem;font-size:12px;font-weight:300;line-height:1.6;color:var(--muted);border-bottom:1px solid rgba(26,25,24,.06);vertical-align:top}\n.stain-table tr:last-child td{border-bottom:none}\n.stain-table td:first-child{color:var(--ink);font-weight:400}\n.stain-table .do-cell{color:#5A8A5A}\n.stain-table .warn-cell{color:var(--pink)}\n/* storage steps */\n.storage-steps{display:flex;flex-direction:column;gap:1rem;margin:1.8rem 0}\n.storage-step{display:flex;gap:1.2rem;align-items:flex-start;padding:1.2rem 1.4rem;background:var(--white);border:1px solid rgba(26,25,24,.07);border-left:3px solid transparent;transition:border-color .2s}\n.storage-step:hover{border-left-color:var(--gold)}\n.storage-step-n{font-family:var(--s);font-style:italic;font-weight:300;font-size:32px;color:rgba(201,168,76,.25);line-height:1;flex-shrink:0;width:2.2rem;text-align:center}\n.storage-step-body{padding-top:.1rem}\n.storage-step-h{font-family:var(--ss);font-size:12px;font-weight:500;color:var(--ink);display:block;margin-bottom:.25rem;letter-spacing:.02em}\n.storage-step-d{font-family:var(--ss);font-size:12px;font-weight:300;color:var(--muted);line-height:1.7}\n/* do/dont */\n.do-dont{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;margin:1.8rem 0}\n.do-list,.dont-list{list-style:none;display:flex;flex-direction:column;gap:.5rem}\n.do-list-h,.dont-list-h{font-family:var(--ss);font-size:10px;font-weight:500;letter-spacing:.2em;text-transform:uppercase;display:block;margin-bottom:.7rem}\n.do-list-h{color:#5A8A5A}\n.dont-list-h{color:var(--pink)}\n.do-list li,.dont-list li{font-family:var(--ss);font-size:12px;font-weight:300;line-height:1.7;color:var(--muted);padding-left:1.2rem;position:relative}\n.do-list li::before{content:'✓';position:absolute;left:0;color:#5A8A5A;font-size:11px;top:.05em}\n.dont-list li::before{content:'✗';position:absolute;left:0;color:var(--pink);font-size:11px;top:.05em}\n/* kolkata note */\n.kolkata-note{background:var(--dark);padding:2rem 2.2rem;margin:1.8rem 0;border-left:4px solid var(--gold)}\n.kolkata-note-label{font-family:var(--ss);font-size:9px;font-weight:500;letter-spacing:.28em;text-transform:uppercase;color:var(--gold);display:block;margin-bottom:.6rem}\n.kolkata-note-text{font-family:var(--ss);font-size:13px;font-weight:300;line-height:1.8;color:rgba(245,240,232,.7)}\n.kolkata-note-text strong{color:var(--cream);font-weight:400}\n/* pressing guide */\n.press-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem;margin:1.8rem 0}\n.press-card{border:1px solid rgba(26,25,24,.08);padding:1.6rem}\n.press-card.correct{border-color:rgba(201,168,76,.3);background:var(--gold-a)}\n.press-card-label{font-family:var(--ss);font-size:9px;font-weight:500;letter-spacing:.22em;text-transform:uppercase;display:block;margin-bottom:.5rem}\n.press-card.correct .press-card-label{color:var(--gold)}\n.press-card:not(.correct) .press-card-label{color:var(--pink)}\n.press-card-title{font-family:var(--s);font-style:italic;font-weight:300;font-size:clamp(16px,1.8vw,22px);color:var(--ink);display:block;margin-bottom:.7rem}\n.press-card-items{list-style:none;display:flex;flex-direction:column;gap:.4rem}\n.press-card-items li{font-family:var(--ss);font-size:12px;font-weight:300;color:var(--muted);padding-left:1rem;position:relative;line-height:1.6}\n.press-card.correct .press-card-items li::before{content:'✓';position:absolute;left:0;color:var(--gold);font-size:11px}\n.press-card:not(.correct) .press-card-items li::before{content:'✗';position:absolute;left:0;color:var(--pink);font-size:11px}\n/* related */\n.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem;margin-top:2rem}\n.rel-card{border:1px solid rgba(26,25,24,.08);padding:1.8rem;text-decoration:none;display:flex;flex-direction:column;gap:.6rem;transition:box-shadow .25s,transform .25s,border-color .25s}\n.rel-card:hover{box-shadow:var(--sh2);transform:translateY(-3px);border-color:rgba(201,168,76,.3)}\n.rel-tag{font-family:var(--ss);font-size:9px;font-weight:500;letter-spacing:.2em;text-transform:uppercase;color:var(--gold)}\n.rel-title{font-family:var(--s);font-style:italic;font-weight:300;font-size:clamp(15px,1.8vw,20px);color:var(--ink);line-height:1.2}\n.rel-desc{font-family:var(--ss);font-size:11px;font-weight:300;color:var(--muted);line-height:1.65}\n.rel-arrow{font-family:var(--ss);font-size:9px;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-top:auto;padding-top:.8rem;transition:color .2s}\n.rel-card:hover .rel-arrow{color:var(--gold)}\n/* faq */\n.bsc-faq{background:var(--cream);padding:7rem 8vw}\n.bsc-faq-inner{max-width:860px;margin:0 auto}\n.bsc-ey{font-family:var(--ss);font-size:10px;font-weight:500;letter-spacing:.32em;text-transform:uppercase;color:var(--gold);display:flex;align-items:center;gap:.8rem;margin-bottom:1.2rem}\n.bsc-ey::before{content:'';width:24px;height:1px;background:var(--gold);flex-shrink:0}\n.bsc-h2{font-family:var(--s);font-style:italic;font-weight:300;font-size:clamp(28px,4vw,52px);color:var(--ink);line-height:1.05;margin-bottom:2.5rem;letter-spacing:-.02em}\n.bsc-h2 em{font-style:normal;color:var(--gold)}\n.faq-item{border-bottom:1px solid rgba(26,25,24,.09)}\n.faq-item:first-of-type{border-top:1px solid rgba(26,25,24,.09)}\n.faq-q{font-family:var(--s);font-style:italic;font-weight:300;font-size:clamp(14px,1.5vw,18px);color:var(--ink);cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:1rem;background:none;border:none;width:100%;text-align:left;padding:.9rem 0;transition:color .2s}\n.faq-q:hover,.faq-item.open .faq-q{color:var(--gold)}\n.faq-ico{width:16px;height:16px;color:rgba(26,25,24,.22);flex-shrink:0;transition:transform .3s,color .2s}\n.faq-item.open .faq-ico{transform:rotate(45deg);color:var(--gold)}\n.faq-a{display:none;font-size:13px;font-weight:300;line-height:1.9;color:var(--muted);padding-bottom:1rem;font-family:var(--ss)}\n.faq-item.open .faq-a{display:block}\n/* cta */\n.bsc-cta{background:var(--gold);padding:8rem 8vw;text-align:center;position:relative;overflow:hidden}\n.bsc-cta::before{content:'';position:absolute;inset:0;background-image:repeating-linear-gradient(-60deg,transparent,transparent 30px,rgba(255,255,255,.04) 30px,rgba(255,255,255,.04) 31px)}\n.bsc-cta-inner{position:relative;z-index:1;max-width:680px;margin:0 auto}\n.bsc-cta-rule{width:36px;height:2px;background:var(--ink);opacity:.2;margin:0 auto 2rem}\n.bsc-cta-h2{font-family:var(--s);font-style:italic;font-weight:300;font-size:clamp(40px,8vw,96px);color:var(--ink);line-height:.88;letter-spacing:-.05em;margin-bottom:.8rem}\n.bsc-cta-sub{font-family:var(--ss);font-size:13px;font-weight:300;color:rgba(26,25,24,.55);line-height:1.8;max-width:440px;margin:0 auto 2rem}\n.bsc-cta-btns{display:flex;gap:.7rem;justify-content:center;flex-wrap:wrap}\n/* wa/cursor/intro */\n.wa-float{position:fixed;bottom:2rem;right:2rem;width:56px;height:56px;border-radius:50%;display:flex;align-items:center;justify-content:center;z-index:9990;box-shadow:0 4px 20px rgba(37,211,102,.35);transition:transform .3s;text-decoration:none;background:none}\n.wa-float:hover{transform:scale(1.1) translateY(-2px)}\n.wa-float::before{content:'';position:absolute;inset:-4px;border-radius:50%;border:2px solid rgba(37,211,102,.35);animation:waPulse 2.5s ease-out infinite}\n@keyframes waPulse{0%{transform:scale(1);opacity:.6}100%{transform:scale(1.5);opacity:0}}\n@media(hover:hover) and (pointer:fine){*{cursor:none!important}.cur-d{position:fixed;top:0;left:0;z-index:99999;pointer-events:none;width:8px;height:8px;border-radius:50%;background:var(--gold);transform:translate(-50%,-50%);transition:width .15s,height .15s,opacity .3s}.cur-r{position:fixed;top:0;left:0;z-index:99998;pointer-events:none;width:28px;height:28px;border-radius:50%;border:1.5px solid rgba(201,168,76,.45);transform:translate(-50%,-50%);transition:width .25s var(--ease),height .25s var(--ease),opacity .3s}body.cur-hl .cur-d{width:12px;height:12px}body.cur-hl .cur-r{width:40px;height:40px}body.cur-hd .cur-d,body.cur-hd .cur-r{opacity:0}}\n#introEl{position:fixed;inset:0;z-index:99997;background:var(--dark);display:flex;align-items:center;justify-content:center;flex-direction:column;gap:1.2rem;transition:opacity .6s ease}\n#introEl.hidden{opacity:0;pointer-events:none}\n.intro-m{font-family:var(--s);font-style:italic;font-weight:300;font-size:88px;color:var(--gold);letter-spacing:-.04em;opacity:0;animation:iFade .8s var(--ease) .15s forwards}\n.intro-l{width:0;height:1px;background:var(--gold);opacity:.4;animation:iGrow .7s var(--ease) .35s forwards}\n.intro-w{font-size:10px;font-weight:300;letter-spacing:.35em;text-transform:uppercase;color:rgba(245,240,232,.38);opacity:0;animation:iFade .6s ease .55s forwards}\n@keyframes iFade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}\n@keyframes iGrow{from{width:0}to{width:64px}}\n.pg-ov{position:fixed;inset:0;z-index:99996;background:var(--cream);opacity:0;pointer-events:none;transition:opacity .35s ease}\n.pg-ov.visible{opacity:1;pointer-events:all}\n@media print{.wa-float,.cur-d,.cur-r,#introEl,.pg-ov,.bookPill,.seasonal-banner,.scroll-bar{display:none!important}body{font-size:11pt;background:#fff;color:#000}}\n@media(max-width:960px){.bsc-body{grid-template-columns:1fr;padding-left:6vw;padding-right:6vw}.bsc-sidebar{position:static;display:none}.bsc-content{padding-top:2rem}.variety-grid{grid-template-columns:1fr}.do-dont{grid-template-columns:1fr}.press-grid{grid-template-columns:1fr}.related-grid{grid-template-columns:1fr}}\n@media(max-width:640px){.bsc-hero{padding:0 6vw 4rem}.bsc-strip{grid-template-columns:1fr 1fr}.bsc-stat:nth-child(3),.bsc-stat:nth-child(4){border-top:1px solid rgba(201,168,76,.1)}.bsc-stat:nth-child(even){border-right:none}.bsc-def-sec,.bsc-faq,.bsc-cta{padding-left:6vw;padding-right:6vw}}\n\n/* ═══════════════════════════════════════════════\n GLOBAL FEATURES — added to every page\n ═══════════════════════════════════════════════ */\n\n/* ── Sticky booking pill (mobile only) ── */\n.book-pill{\n display:none;\n position:fixed;bottom:1.5rem;left:50%;transform:translateX(-50%);\n background:var(--pink);color:#fff;\n font-family:var(--sans);font-size:10px;font-weight:500;\n letter-spacing:.18em;text-transform:uppercase;\n padding:.75rem 1.8rem;border-radius:30px;\n text-decoration:none;white-space:nowrap;\n box-shadow:0 4px 20px rgba(192,65,90,.4);\n z-index:9985;\n animation:pillIn .4s cubic-bezier(.16,1,.3,1);\n transition:opacity .3s,transform .3s;\n}\n.book-pill:hover{background:var(--pink2,#a8324a);transform:translateX(-50%) translateY(-2px)}\n.book-pill.hidden{opacity:0;pointer-events:none;transform:translateX(-50%) translateY(8px)}\n@keyframes pillIn{from{opacity:0;transform:translateX(-50%) translateY(16px)}to{opacity:1;transform:translateX(-50%) translateY(0)}}\n@media(max-width:768px){.book-pill{display:flex;align-items:center;gap:.5rem}}\n/* Hide pill on the pickup page itself */\nbody.page-pickup .book-pill{display:none!important}\n\n/* ── Seasonal banner ── */\n.seasonal-banner{\n background:var(--dark2,#1a1918);color:rgba(255,255,255,.75);\n font-family:var(--sans);font-size:10px;font-weight:400;letter-spacing:.08em;\n text-align:center;padding:.45rem 3rem;position:relative;z-index:10000;\n border-bottom:.5px solid rgba(255,255,255,.08);\n}\n.seasonal-banner a{color:var(--gold,#C9A84C);text-decoration:none;margin-left:.5rem;font-weight:500}\n.seasonal-banner a:hover{text-decoration:underline}\n.banner-close{position:absolute;right:1rem;top:50%;transform:translateY(-50%);\n background:none;border:none;color:rgba(255,255,255,.4);cursor:pointer;\n font-size:14px;line-height:1;padding:.2rem;transition:color .2s}\n.banner-close:hover{color:#fff}\n.seasonal-banner.hidden{display:none}\n@media(prefers-color-scheme:light){\n .seasonal-banner{background:var(--dark2,#1a1918)}\n}\n\n/* ── Dark/light toggle in nav ── */\n.theme-toggle{\n width:32px;height:32px;border-radius:50%;\n background:none;border:.5px solid rgba(128,128,128,.25);\n cursor:pointer;display:flex;align-items:center;justify-content:center;\n transition:border-color .2s,background .2s;flex-shrink:0;\n}\n.theme-toggle:hover{border-color:var(--gold,#C9A84C);background:rgba(201,168,76,.08)}\n.theme-toggle svg{width:14px;height:14px;transition:opacity .2s}\n.theme-toggle .icon-dark{display:block}\n.theme-toggle .icon-light{display:none}\n[data-theme=\"light\"] .theme-toggle .icon-dark{display:none}\n[data-theme=\"light\"] .theme-toggle .icon-light{display:block}\n\n/* ── Google rating badge in footer ── */\n.g-rating-badge{\n display:inline-flex;align-items:center;gap:.5rem;\n text-decoration:none;\n font-family:var(--sans);\n padding:.5rem .8rem;\n border-radius:6px;\n border:.5px solid rgba(255,255,255,.12);\n background:rgba(255,255,255,.04);\n transition:border-color .2s,background .2s;\n margin-bottom:.8rem;\n}\n.g-rating-badge:hover{border-color:rgba(201,168,76,.3);background:rgba(201,168,76,.05)}\n.g-rating-stars{color:#FBBC04;font-size:13px;letter-spacing:.05em;line-height:1}\n.g-rating-num{font-family:var(--sans);font-size:13px;font-weight:500;color:#fff}\n.g-rating-label{font-family:var(--sans);font-size:9px;font-weight:300;\n color:rgba(255,255,255,.45);letter-spacing:.08em}\n.g-rating-logo{font-family:var(--sans);font-size:9px;font-weight:700;\n color:#4285F4;letter-spacing:-.02em}\n@media(prefers-color-scheme:light){\n .g-rating-badge{border-color:rgba(26,25,24,.12);background:#fff}\n .g-rating-num{color:#1a1918}\n .g-rating-label{color:rgba(26,25,24,.45)}\n}\n\n/* ── WhatsApp share button (blogs/guides) ── */\n.wa-share{\n display:inline-flex;align-items:center;gap:.5rem;\n background:#25D366;color:#fff;\n font-family:var(--sans);font-size:9px;font-weight:500;\n letter-spacing:.15em;text-transform:uppercase;\n padding:.65rem 1.2rem;border-radius:6px;text-decoration:none;\n transition:background .2s;\n}\n.wa-share:hover{background:#1da851}\n.wa-share svg{width:14px;height:14px;flex-shrink:0}\n\n/* ── Reading time indicator ── */\n.reading-time{\n font-family:var(--sans);font-size:10px;font-weight:300;\n color:var(--txt3,rgba(255,255,255,.4));letter-spacing:.08em;\n display:inline-flex;align-items:center;gap:.35rem;\n}\n.reading-time svg{width:11px;height:11px;opacity:.6}\n\n/* ── Was this helpful ── */\n.helpful-block{\n display:flex;align-items:center;gap:1rem;flex-wrap:wrap;\n padding:1.2rem 0;margin-top:2rem;\n border-top:1px solid rgba(128,128,128,.12);\n}\n.helpful-label{font-family:var(--sans);font-size:12px;font-weight:300;\n color:var(--txt3,rgba(255,255,255,.4))}\n.helpful-btn{\n font-family:var(--sans);font-size:10px;font-weight:400;letter-spacing:.1em;\n text-transform:uppercase;padding:.4rem 1rem;border-radius:4px;cursor:pointer;\n border:.5px solid rgba(128,128,128,.2);background:none;\n color:var(--txt3,rgba(255,255,255,.4));transition:all .2s;\n}\n.helpful-btn:hover,.helpful-btn.active{\n border-color:var(--pink);color:var(--pink);background:rgba(192,65,90,.06)}\n.helpful-thanks{font-family:var(--sans);font-size:11px;color:var(--pink);display:none}\n.helpful-thanks.show{display:block}\n\n/* ── Page reading progress (long guides) ── */\n.read-progress{\n position:fixed;top:0;left:0;height:2px;\n background:var(--gold,#C9A84C);z-index:9999;width:0;\n transition:width .1s linear;\n}\n\n\n/* FOOTER */\n/* ═══ FOOTER BASE ═══ */\n.site-footer{\n background:#0a0906;\n position:relative;\n}\n\n/* ── CONTACT FORM STRIP ── */\n.footer-form-strip{\n border-bottom:0.5px solid rgba(201,168,76,0.1);\n padding:5rem 4rem;\n background:rgba(255,255,255,0.01);\n}\n.footer-form-wrap{\n max-width:1000px;\n margin:0 auto;\n}\n.footer-form-header{\n margin-bottom:2.5rem;\n}\n.footer-form-eye{\n font-family:var(--sans);font-size:9px;\n letter-spacing:0.32em;text-transform:uppercase;\n color:var(--gold);margin-bottom:0.8rem;\n}\n.footer-form-title{\n font-family:var(--serif);font-style:italic;font-weight:300;\n font-size:clamp(20px,2.5vw,32px);\n color:#fff;line-height:1.3;letter-spacing:-0.01em;\n}\n\n/* Form grid */\n.footer-form-row{\n display:grid;\n grid-template-columns:repeat(4,1fr);\n gap:1rem;\n margin-bottom:1rem;\n}\n.footer-form-field{\n display:flex;flex-direction:column;gap:0.4rem;\n}\n.footer-form-field-full{\n margin-bottom:1.2rem;\n}\n.footer-form-label{\n font-family:var(--sans);font-size:9px;\n letter-spacing:0.18em;text-transform:uppercase;\n color:rgba(255,255,255,0.4);\n}\n.footer-form input,\n.footer-form select,\n.footer-form textarea{\n background:rgba(255,255,255,0.04);\n border:0.5px solid rgba(255,255,255,0.1);\n color:#fff;\n font-family:var(--sans);font-size:13px;font-weight:300;\n padding:10px 14px;\n outline:none;\n transition:border-color 0.3s,background 0.3s;\n width:100%;\n appearance:none;\n -webkit-appearance:none;\n}\n.footer-form input::placeholder,\n.footer-form textarea::placeholder{\n color:rgba(255,255,255,0.2);\n}\n.footer-form input:focus,\n.footer-form select:focus,\n.footer-form textarea:focus{\n border-color:rgba(201,168,76,0.5);\n background:rgba(255,255,255,0.06);\n}\n.footer-form select{\n background-image:url(\"data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='rgba(201,168,76,0.6)'/%3E%3C/svg%3E\");\n background-repeat:no-repeat;\n background-position:right 14px center;\n padding-right:32px;\n cursor:pointer;\n}\n.footer-form select option{\n background:#1a1918;color:#fff;\n}\n.footer-form textarea{\n resize:vertical;min-height:80px;\n}\n\n/* Submit row */\n.footer-form-submit-row{\n display:flex;align-items:center;\n justify-content:space-between;\n gap:1rem;flex-wrap:wrap;\n}\n.footer-form-legal{\n font-family:var(--sans);font-size:10px;\n color:rgba(255,255,255,0.2);line-height:1.6;\n}\n.footer-form-legal a{\n color:rgba(255,255,255,0.35);\n text-decoration:none;\n}\n.footer-form-btn{\n display:inline-flex;align-items:center;gap:0.6rem;\n background:var(--pink);border:none;cursor:pointer;\n font-family:var(--sans);font-size:10px;\n font-weight:500;letter-spacing:0.2em;text-transform:uppercase;\n color:#fff;padding:12px 28px;\n transition:background 0.25s,gap 0.3s;\n white-space:nowrap;\n}\n.footer-form-btn:hover{background:var(--pink2);gap:0.9rem}\n.footer-form-btn-arrow{\n display:inline-block;transition:transform 0.3s;\n}\n.footer-form-btn:hover .footer-form-btn-arrow{transform:translateX(4px)}\n\n/* Success message */\n.footer-form-success{\n padding:1rem 0;\n font-family:var(--serif);font-style:italic;\n font-size:16px;color:var(--gold-l);\n}\n\n/* ── MAIN COLUMNS ── */\n.footer-main{\n display:grid;\n grid-template-columns:1.5fr 1fr 1fr 1.2fr;\n gap:3rem;\n max-width:1200px;margin:0 auto;\n padding:5rem 4rem;\n border-bottom:0.5px solid rgba(201,168,76,0.1);\n}\n\n/* Brand col */\n.footer-logo{\n display:block;height:40px;width:auto;\n margin-bottom:1.6rem;\n opacity:0.85;\n}\n.footer-seo-text{\n font-family:var(--sans);font-size:11px;\n font-weight:300;line-height:1.85;\n color:rgba(255,255,255,0.38);\n margin-bottom:2rem;\n}\n\n/* Chotusingh */\n.footer-chotu{\n margin-bottom:1.2rem;\n}\n.footer-chotu-img{\n display:block;height:100px;width:auto;\n object-fit:contain;\n mix-blend-mode:lighten;\n filter:brightness(1.1) contrast(1.05);\n margin-bottom:0.4rem;\n}\n.footer-chotu-line{\n font-family:var(--serif);font-style:italic;font-weight:300;\n font-size:11px;color:rgba(255,255,255,0.22);\n line-height:1.5;\n}\n\n/* Nav cols */\n.footer-col{\n display:flex;flex-direction:column;\n}\n.footer-col-brand{\n display:flex;\n flex-direction:column;\n}\n.footer-col-title{\n font-family:var(--sans);font-size:9px;\n font-weight:500;letter-spacing:0.28em;text-transform:uppercase;\n color:var(--gold);\n margin-bottom:1.4rem;\n padding-bottom:0.8rem;\n border-bottom:0.5px solid rgba(201,168,76,0.15);\n}\n.footer-links{\n list-style:none;\n display:flex;flex-direction:column;gap:0.65rem;\n}\n.footer-links a{\n font-family:var(--sans);font-size:12px;font-weight:300;\n color:rgba(255,255,255,0.42);text-decoration:none;\n transition:color 0.3s ease, padding-left 0.3s ease;\n line-height:1.4;display:block;\n}\n.footer-links a:hover{\n color:rgba(255,255,255,0.85);\n padding-left:4px;\n}\n\n/* Contact col */\n.footer-col-contact{\n justify-content:space-between;\n display:flex;\n flex-direction:column;\n}\n.footer-col-contact .footer-apps{\n margin-top:auto;\n}\n.footer-contact-item{margin-bottom:1.1rem}\n.footer-contact-lbl{\n display:block;\n font-family:var(--sans);font-size:8px;\n letter-spacing:0.22em;text-transform:uppercase;\n color:var(--gold);opacity:0.65;margin-bottom:0.25rem;\n}\n.footer-address{\n font-family:var(--sans);font-size:11px;font-weight:300;\n 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btn.classList.add('active');\n });\n });\n\n})();\n\n\n;\n(function(){var f=new Date(\"2013-10-07\");var n=new Date();var y=n.getFullYear()-f.getFullYear();if(n\n TSL\n
\n The Swiss Laundry\n \n Skip to main content\n
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\n 01\n
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\n Safety\n Edition 01  ·  The Record\n
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Unorganised dry cleaners use MTO and white petrol. Here is what that means for your skin.

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\n The Swiss LaundryKasba, Kolkata\n 10 Jun 2026\n 7 min read\n 1,850 words\n
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Most neighbourhood dry cleaners in India still clean clothes using MTO or white petrol — petroleum solvents that leave residue on fabric. This post explains the chemistry, the health concern, and what to look for when choosing a dry cleaner.
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At a glance

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What this article covers.

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  • What MTO and white petrol are — and why they are used by unorganised dry cleaners
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  • Why petroleum solvent residue on fabric is a health concern
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  • The difference between MTO and professional hydrocarbon dry cleaning solvent
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  • How to identify whether your dry cleaner uses safe or unsafe solvents
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  • Why this problem persists in India's unorganised laundry sector
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What is MTO — and what is white petrol?

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MTO stands for Mineral Turpentine Oil. It is a petroleum distillate — a fraction of crude oil refined to a specific boiling range. In industrial contexts it is used as a paint thinner, a cleaning solvent for machinery, and a degreaser. It is cheap, widely available at any hardware shop, and effective at dissolving oil and grease from fabric.

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White petrol is a closely related product — a lighter petroleum fraction sold under a different local trade name. In some regions, dry cleaners use kerosene or crude petroleum spirit for the same purpose. These are all petroleum hydrocarbons. They share the same fundamental chemistry, the same regulatory classification, and the same risks.

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Key distinction

MTO and white petrol are not the same as professional hydrocarbon dry cleaning solvent. Professional dry cleaning uses a highly refined, purified hydrocarbon solvent processed to remove aromatic compounds. The two are chemically different and their safety profiles are completely different.

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Why do unorganised dry cleaners use it?

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The answer is economic. A professional dry cleaning machine costs ₹8–20 lakhs. Professional hydrocarbon solvent costs ₹800–1,200 per litre. MTO costs ₹50–80 per litre from any hardware supplier and requires no special equipment — a brush, a cleaning table, and a hand-applied solvent process.

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\"In the absence of mandatory solvent regulation for small dry cleaners in India, the practice of using MTO continues entirely on economic grounds.\"

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India's unorganised dry cleaning sector represents the vast majority of establishments by number. Without licensing requirements or solvent regulation, the economics of MTO-based cleaning are so asymmetric that the practice will continue until consumer awareness changes demand.

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The health concern — what residue does it leave?

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Petroleum solvents do not evaporate completely. When MTO is applied to fabric, a portion penetrates the fibres. The lighter fractions evaporate, but heavier aromatic and aliphatic compounds stay in the fabric as residue. These compounds are what concern toxicologists.

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CompoundClassificationRoute
Petroleum distillatesIARC Group 2B (possible carcinogen)Skin absorption, inhalation
Polynuclear aromatic hydrocarbons (PAHs)Several IARC Group 1 (carcinogenic)Skin absorption from fabric
Professional hydrocarbon solventNot classified as carcinogen when used correctlyMinimal — sealed machine
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The exposure route that concerns dermatologists is skin absorption from fabric contact. When clothing cleaned with MTO is worn against skin for hours — a silk saree, a woollen suit, a kurta — any residue transfers to the skin surface.

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Silk sarees specifically

Silk is particularly vulnerable to retaining solvent residue because its protein fibres are highly absorbent. Kolkata's silk-intensive wardrobe — sarees worn year-round — makes this a specific concern for the city.

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The professional standard — how sealed machines differ

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Professional dry cleaning uses a fundamentally different process. In an enclosed automatic machine, the garment enters a sealed drum. Hydrocarbon solvent circulates in a closed loop. After cleaning, the solvent is extracted and filtered. The garment dries inside the same sealed system.

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Sealed solvent circuit
Solvent never contacts open air, the operator, or the environment. No open vat, no open brushing.
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Solvent recovery
Professional machines recover 99%+ of solvent per cycle, filtered and reused. No disposal of used solvent into drains.
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Zero residue on garment
Garment fully dried inside the sealed machine. Residual solvent in the fabric is effectively zero.
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Regulated solvent chemistry
Professional hydrocarbon solvent has aromatic compounds including benzene removed. Not the same as industrial MTO, regardless of both being petroleum-derived.
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The Swiss Laundry has operated sealed automatic machines at Kasba, Kolkata since 2013. This is the only standard we accept.

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How to check whether your dry cleaner uses safe solvents

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Ask directly: what solvent do you use? A professional dry cleaner will answer immediately. Safe answers: hydrocarbon solvent, Perc (perchloroethylene), or GreenEarth. Unsafe answers: petrol, white petrol, MTO, thinner, or evasion.

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Also look for an enclosed drum machine. If you cannot see one, no automatic dry cleaning is happening. A brush and a vat of solvent is the MTO method.

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The test in 10 seconds

Ask: \"What solvent do you use for dry cleaning?\" If they cannot name it, they almost certainly use one they know customers would reject.

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\n The Swiss Laundry — The Swiss Laundry Standard\n

The Swiss Laundry has used professional-grade hydrocarbon solvent in fully enclosed automatic machines since 2013. No MTO. No open-process cleaning. No petroleum residue on returned garments. 13 years of the same standard — before it became a conversation.

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Questions

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Questions answered directly.

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MTO (Mineral Turpentine Oil) is a petroleum distillate. It is used by unorganised dry cleaners because it costs ₹50–80 per litre and requires no special equipment. Professional hydrocarbon solvent costs ten times more and requires enclosed machines costing ₹8–20 lakhs. In the absence of solvent regulation for small establishments in India, the economics favour MTO.

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There is a genuine health concern. MTO and white petrol leave petroleum residue in fabric. This residue can absorb through skin during prolonged contact. The IARC classifies several petroleum distillate compounds as possible carcinogens. Professional dry cleaning with enclosed machines and proper solvent leaves no residue on garments.

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Ask what solvent they use. Safe answers: hydrocarbon solvent, Perc, GreenEarth. Unsafe: petrol, white petrol, MTO, thinner, or inability to name the solvent. Also look for an enclosed drum machine — if you cannot see one, open-vat petroleum cleaning is happening.

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Professional-grade hydrocarbon solvent in fully enclosed automatic machines since 2013. Solvent is recovered and recycled each cycle. No petroleum residue remains on garments after cleaning.

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A faint solvent scent that dissipates in 2–4 hours of airing is normal and harmless — it is residual vapour, not liquid residue. A strong petrochemical smell that persists after airing indicates MTO or petroleum solvent use, where liquid residue has soaked into the fabric fibres.

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TSL
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\n The Swiss Laundry — Editorial Team\n Written from Kasba, Kolkata. 13 years of professional dry cleaning. P-4 Kasba Industrial Estate, Phase III, E.M. Bypass (East), Kolkata 700107.\n
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Published: 10 Jun 2026
Last updated: 10 Jun 2026
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