{"product_id":"koch-chemie-leather-star-ls-lederpflege","title":"Leather Star \"Ls\" Leather Care","description":"\u003ch2 id=\"speakable-headline\"\u003eKoch-Chemie Leather Star keeps vehicle leather supple and matt\u003c\/h2\u003e\n\n\u003cblockquote id=\"speakable-summary\"\u003e\n  \u003cp\u003e\u003cem\u003eWhat is Koch-Chemie Leather Star \"Ls\"? A ready-to-use leather-care emulsion with cosmetic esters and active UV blockers for smooth leather, perforated leather and Velour on car seats, sofas and leather consoles. It doesn't seal — it leaves a satin-matt OEM look without a greasy shine. Not for Alcantara, long-pile suede or cracked patent-leather surfaces.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\n\u003chr\u003e\n\n\u003cp id=\"speakable-definition\"\u003e\u003cstrong\u003eKoch-Chemie Leather Star \"Ls\"\u003c\/strong\u003e is a leather-care emulsion from Koch-Chemie in Unna that re-greases polyurethane-coated leather with cosmetic actives and shields it from light-driven fading with dedicated UV blockers. The formula carries 10 to 25 weight-percent aliphatic hydrocarbons of the C10–C13 range (per safety data sheet) as a volatile carrier and an antibacterial preservative (Bronopol, under 0.1 percent).\u003c\/p\u003e\n\n\u003cp\u003eThe carriers move cosmetic esters through the micropores of the PU coating down to the collagen fibres and then flash off without residue. What's left behind isn't a sticky wax or oil film but a hair-thin layer inside the fibre matrix — that's what makes Leather Star fundamentally different from Carnauba or beeswax-based dressings, which clog pores and cut breathability.\u003c\/p\u003e\n\n\u003cp\u003eWith normal day-to-day car use the dressing carries for three to six months; in summer with heavy UV and bare legs against the driver's seat, the interval tends to the short end.\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0800\/3272\/7375\/files\/d1_koch-chemie-leather-star-ls-lederpflege_hero.png?v=1777309044\" alt=\"Daniel from Detailing1 laying down Koch-Chemie Leather Star Ls 1000 ml on a Porsche 911 leather interior\" loading=\"lazy\" style=\"width:100%;height:auto;border-radius:4px;\"\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSatin-matt look, no greasy film.\u003c\/strong\u003e On the seat surface you get a colour-deepening effect that isn't shiny — no show-car wet look and no slippery surface. Verified buyers at Trusted Shops put it plainly: \"cares for the leather without leaving a greasy shine\". This matters on BMW or Audi seats with perforated leather, where any shine reads like sweat.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOne litre handles roughly ten car interiors.\u003c\/strong\u003e Real-world use lands around 100 ml per full interior — that's 15 to 20 pea-sized drops per seat cushion. About €1.40 per seat from the 1-litre bottle; in the 3×1 L bundle the per-seat cost drops to about €1.30. The saving versus wax pastes comes from the yield, not the per-litre price.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCleared for premium furniture too.\u003c\/strong\u003e Koch-Chemie's data sheet calls out \"vehicles, furniture etc.\" as the field of use. One Detailing1 customer uses it on a De Sede sofa alongside her car seats. Aniline-leather houses like De Sede, Vitra or USM Haller benefit most, because the low-viscosity emulsion sinks into the open fibre matrix instead of sitting on top.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003cblockquote class=\"praxistipp\"\u003e\n  \u003cp\u003e\u003cstrong\u003eDetailing1's tip from the shop:\u003c\/strong\u003e The most common mistake is over-application. Lay Leather Star on thick and you get a shiny halo on the bolsters and a greasy, slippery film on the cushion. The rule we use in the bay: 15 to 20 pea-sized drops on a microfibre applicator per seat cushion, worked in circular motions and thin as a whisper. With perforated leather, follow up with a soft brush over the holes — otherwise the product dries white inside them. After 5 to 10 minutes' dwell, buff the shine off with a dry microfibre — that's when the OEM look lands.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003ePol Star first, then Leather Star. Lay it down thin.\u003c\/h3\u003e\n\n\u003cp\u003eThe standard workflow on vehicle leather starts with cleaning, not with dressing. First you run \u003ca href=\"\/en\/products\/koch-chemie-pol-star-po-textil-leder-alcantarareiniger\"\u003ePol Star \"Po\"\u003c\/a\u003e as a pH-neutral textile and leather cleaner, work it in, lift it off with a damp microfibre — and then let the leather dry through completely.\u003c\/p\u003e\n\n\u003cp\u003eThis is the most-missed step: put Leather Star onto leather that's still damp and you block fibre penetration outright. The hydrophobic emulsion can't enter a water-saturated fibre structure — it just sits on the surface as a streaky film. On a dirty seat the other way round, the dressing locks sweat and skin oils into the leather pores — a mistake that only shows up after weeks, but then for good.\u003c\/p\u003e\n\n\u003cp\u003eOnto clean, dry leather go 15 to 20 pea-sized drops per seat cushion on a soft microfibre applicator. Work in circular motions across the panel without running over the seat edges.\u003c\/p\u003e\n\n\u003cp\u003eA bolster needs less than a cushion, perforated leather less than smooth leather with a dense grain pattern. On the centre console and the leather steering wheel one single drop per part is enough.\u003c\/p\u003e\n\n\u003cp\u003eWith pigmented aniline leather (often in BMW Individual, Bentley or Rolls-Royce) you work fast, because the open-pore fibre pulls the emulsion in quicker — uneven saturation leaves tonal patches. Let it dwell for 5 to 10 minutes until the surface goes dull-matt. On \u003ca href=\"\/en\/collections\/lederpflege\"\u003eheavily used bolsters\u003c\/a\u003e a treatment every two to three months is enough; on normal car use every four to six months.\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0800\/3272\/7375\/files\/d1_koch-chemie-leather-star-ls-lederpflege_anwendung.png?v=1777309055\" alt=\"Close-up of Koch-Chemie Leather Star Ls being applied to perforated leather with a microfibre applicator\" loading=\"lazy\" style=\"width:100%;height:auto;border-radius:4px;\"\u003e\u003c\/p\u003e\n\n\u003ch3\u003eSmooth, perforated, Velour. Not Alcantara.\u003c\/h3\u003e\n\n\u003cp\u003eLeather Star is explicitly cleared for smooth leather, perforated leather and Velour leather — the leather types you find in interiors from an Audi A4 in standard trim up to a BMW M3 with full-leather sport seats. The low-viscosity emulsion doesn't sit in perforation holes as white residue, it pulls through — that's the edge over wax pastes.\u003c\/p\u003e\n\n\u003cp\u003eOn the protection side, the formula works in three stages: re-greasing the collagen fibres keeps the leather supple and mechanically tough; an anti-adhesion effect on the PU coating cuts friction and jeans-transfer; dedicated UV blockers actively shield against photochemical breakdown and light-driven fading. On convertibles and cars with light leather the UV block carries the heavy lift — without active protection, light aniline leather can fade visibly in a single summer of convertible use.\u003c\/p\u003e\n\n\u003cp\u003eThere are hard limits too. Alcantara isn't leather, it's a synthetic microfibre fabric of polyester and polyurethane — the greasing emulsion glues the microfibres together permanently and triggers pilling. For Alcantara the right tool stays the bare \u003ca href=\"\/en\/products\/koch-chemie-pol-star-po-textil-leder-alcantarareiniger\"\u003ePol Star\u003c\/a\u003e without a follow-up dressing. With vinyl-coated faux leather you can dress the surface, but the material doesn't take up the re-greasing components — a thorough wipe-down afterwards is non-negotiable. On already-cracked patent-leather surfaces you need a repair product from the COLOURLOCK line, not a dressing.\u003c\/p\u003e\n\n\u003cp\u003eFor pro detailers and shops there's one more thing: Leather Star carries 12.35 percent VOC (Swiss VOC-CH regulation). With several applications a day in closed reconditioning bays, ventilation is required — doors wide open or extraction running — plus nitrile gloves because the carriers de-grease your skin (EUH066 in the SDS).\u003c\/p\u003e\n\n\u003cp\u003eIf you've got classic smooth or genuine leather and want a ready-to-use top-up every few months, Leather Star is the call. Pro detailers running ten cars a week have the concentrate sibling in COLOURLOCK Leather Care — same maker, same formula family, different dilution logic.\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0800\/3272\/7375\/files\/d1_koch-chemie-leather-star-ls-lederpflege_workflow.png?v=1777309068\" alt=\"Workflow with Koch-Chemie Pol Star Po and Leather Star Ls on a Porsche 911 interior clean-up\" loading=\"lazy\" style=\"width:100%;height:auto;border-radius:4px;\"\u003e\u003c\/p\u003e\n\n\u003ch3\u003eThree bottle sizes, three buyer profiles.\u003c\/h3\u003e\n\n\u003cp\u003eThe 1-litre bottle at €14.23 is the easy starting point for one or two cars in a private household. With care intervals every four to six months it works out to about ten full car interiors — three to four years for a single car. The bottle itself stays good for 24 months after opening, frost-free and sealed in the original container.\u003c\/p\u003e\n\n\u003cp\u003eThe 2×1 L set at €27.89 saves you roughly 50 cents per litre versus the single bottle. It fits households that look after a car and leather furniture together — high-end manufacturers like De Sede, Vitra or USM Haller build their seating with aniline or semi-aniline leather.\u003c\/p\u003e\n\n\u003cp\u003eFor furniture, once or twice a year after a thorough dust-down is enough, because living-room furniture doesn't take the UV and temperature beating a car interior does. The colour-deepening effect comes out strongest on open-pore aniline.\u003c\/p\u003e\n\n\u003cp\u003eThe 3×1 L bundle at €41.41 fits smaller detailers, shops without 5-litre storage and fleets of three to five vehicles. Per litre you're at about €13.80, which drops the per-seat anchor to around €1.30. If you burn through a full 1 L bottle per quarter, that's the volume that turns over without storage risk — four to five jobs a month.\u003c\/p\u003e\n\n\u003cp\u003eSeasonally, two windows make sense to buy: spring detailing between March and May when convertibles come out of winter storage, and the autumn impregnation between October and November before the dry heating air hits the interior. Both peaks land in DACH search behaviour too, and they're the weeks when Leather Star tends to be most readily available.\u003c\/p\u003e\n\n\u003cp\u003eThe Detailing1 tip the maker doesn't write down: the smell of a fresh application is creamy-chemical and fades within about 48 hours. If you're picking up a passenger on the same day, ventilate well beforehand or do the job at the weekend with the doors open. On perforated seats with ventilation, one more thing: leave the seat-vent switch off until the next morning — otherwise the ventilation pulls the smell into the cushion fill, and it sticks around noticeably longer than the standard 48 hours.\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0800\/3272\/7375\/files\/d1_koch-chemie-leather-star-ls-lederpflege_lineup.png?v=1777309078\" alt=\"Koch-Chemie Pol Star Po and Leather Star Ls 1000 ml with microfibre cloths and detail brush\" loading=\"lazy\" style=\"width:100%;height:auto;border-radius:4px;\"\u003e\u003c\/p\u003e","brand":"Koch-Chemie","offers":[{"title":"1000 ml \/ 1 liter","offer_id":48762445168975,"sku":"D1-KCX-238001","price":12.28,"currency_code":"EUR","in_stock":true},{"title":"2x 1000 mL","offer_id":49725075030351,"sku":"D1-KCX-238001_2","price":24.56,"currency_code":"EUR","in_stock":true},{"title":"3x 1000 mL","offer_id":49725075063119,"sku":"D1-KCX-238001_3","price":36.84,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/3272\/7375\/files\/koch-chemie-leather-star-ls-lederpflege_1000ml.png?v=1713691853","url":"https:\/\/detailing1.nl\/en\/products\/koch-chemie-leather-star-ls-lederpflege","provider":"Detailing1","version":"1.0","type":"link"}