{"title":"Verfärbungen \u0026 Abfärbungen auf Leder — COLOURLOCK","description":null,"products":[{"product_id":"koch-chemie-colourlock-blocker-sperrschicht-verfaerbungen","title":"COLOURLOCK \"Blocker\" barrier coat against bleed-through discolouration","description":"\u003ch2\u003eCOLOURLOCK Blocker — barrier coat against discolouration on leather\u003c\/h2\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003cem\u003eWhat is COLOURLOCK Blocker for? — The Blocker forms an insulating barrier coat on leather that stops discolouration, bleed-through or dye migration from the base coming through to the surface.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eCOLOURLOCK Blocker\u003c\/strong\u003e is a dedicated barrier coat you lay down before dyeing or sealing to reliably stop discolouration and dye bleed-through. On tricky leather in particular – after pulling denim rub-off, over old repairs, nicotine staining or heavily contaminated surfaces – the Blocker keeps leftover pigment or dissolved dyes from showing through again later. That gives you a clean, stable base for a colour result that stays even over time.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEffective barrier coat\u003c\/strong\u003e – Blocks discolouration, bleed-through and dye migration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdeal repair base\u003c\/strong\u003e – Stabilises difficult substrates before dyeing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA must on problem leather\u003c\/strong\u003e – Perfect after GLD Solvent, heavy cleaning or degreasing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eBarrier technology \u0026amp; how it works\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eBlocker\u003c\/strong\u003e lays down a thin, transparent insulating film that stops any leftover dyes, oil residue or contaminants from deeper layers migrating up to the surface. That barrier is key when the leather has been heavily cleaned, stripped of colour or chemically treated beforehand. The Blocker stabilises the surface without sealing it the way a Top Coat does, and stays open enough for the following colour or finish products to grip properly.\u003c\/p\u003e\n\u003ch3\u003eApplication, laydown \u0026amp; best practices\u003c\/h3\u003e\n\u003cp\u003eAfter a deep clean or using products like Degreaser or GLD Solvent, you lay \u003cstrong\u003eCOLOURLOCK Blocker\u003c\/strong\u003e down thin and even with a sponge or by spraying. Let the coat dry fully before you bring on colour, Leather Fresh or leather dye. On really critical jobs a second thin coat can make sense. What matters is an even laydown so the barrier effect stays consistent across the whole area. After that you can go on with the regular colour and finish build-up.\u003c\/p\u003e\n\u003ch3\u003eResults, uses \u0026amp; where it fits\u003c\/h3\u003e\n\u003cp\u003eOnce applied, the leather surface stays colour-stable and free of discolouration coming back. \u003cstrong\u003eCOLOURLOCK Blocker\u003c\/strong\u003e is a perfect fit for automotive leather, furniture, bags and interior parts with a known bleed-through problem. It's not a cleaner, not a filler and not a Top Coat, but a prep product that goes in between cleaning and colour. On light-coloured leather especially, the Blocker is what gets you a clean result that lasts.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eCommon questions about COLOURLOCK Blocker\u003c\/h2\u003e\n\u003ch4\u003eWhen do I need a blocker?\u003c\/h4\u003e\n\u003cp\u003eAny time you'd expect discolouration or dye bleed-through after dyeing.\u003c\/p\u003e\n\u003ch4\u003eDoes blocker make sense on light leather?\u003c\/h4\u003e\n\u003cp\u003eYes, on light leather especially it stops dark shadows creeping back later.\u003c\/p\u003e\n\u003ch4\u003eCan I dye straight after?\u003c\/h4\u003e\n\u003cp\u003eYes, as soon as the Blocker has dried fully.\u003c\/p\u003e\n\u003ch4\u003eDoes blocker replace the Top Coat?\u003c\/h4\u003e\n\u003cp\u003eNo. Blocker is a barrier coat, Top Coat is the final protection.\u003c\/p\u003e\n\u003ch4\u003eCan blocker be used on all leather?\u003c\/h4\u003e\n\u003cp\u003eOn pigmented smooth leather, yes. Not for nubuck, suede or aniline leather.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003csmall\u003eLast updated: 11.12.2025 — Author: Daniel (Detailing1)\u003c\/small\u003e\u003c\/p\u003e","brand":"Koch-Chemie × COLOURLOCK","offers":[{"title":"1000 ml \/ 1 liter","offer_id":56616626389327,"sku":"D1-KCX-603-1L-01","price":76.99,"currency_code":"EUR","in_stock":true},{"title":"100ml","offer_id":56616626422095,"sku":"D1-KCX-603-100ML-01","price":31.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/3272\/7375\/files\/603-1L-01_1.png?v=1765658063"}],"url":"https:\/\/detailing1.co\/collections\/koch-chemie-colourlock-ratgeber-verfaerbungen.oembed","provider":"Detailing1","version":"1.0","type":"link"}