Koch-Chemie × COLOURLOCK COLOURLOCK "Leather Fixative" to protect against color bleeding during washing 1000ml

Reliable color fixation for wash-fast leather thanks to COLOURLOCK Leather Fixative

What is COLOURLOCK Leather Fixative used for? — The color fixative stabilizes excess dyes in aniline, nubuck, and pigmented leathers, prevents bleeding during washing or cleaning, and ensures colors stay where they belong.

COLOURLOCK Leather Fixative is the professional solution when you want to reliably control dyes in leather. Especially for washable leather parts – such as vehicle components, bags, seat covers, or fashion items – the fixative prevents excess pigments from bleeding during washing or cleaning. The formula comes from COLOURLOCK leather technology: It stabilizes mobilized dyes, prevents unwanted migration, and ensures a uniformly calm result – indispensable for delicate leather qualities such as aniline, nubuck, and semi-aniline automotive leathers.

• Reliably protects against bleeding – The fixative technology binds excess dyes and prevents them from coming loose during washing or transferring to surrounding materials.
• Suitable for all washable leathers – Ideal for cars, furniture, fashion, and accessories; according to the manufacturer, it can be used for all types of leather where color stability is critical.
• Stabilizes the surface – After treatment, the leather appears more color-stable, which makes subsequent cleaning or care steps safer and more uniform.

Fixation technology & mechanism of action for dyeing leathers

Leather Fixative uses a special fixing component that specifically attaches to loose, not fully bound dyes. This is particularly relevant for open-pore or delicate leathers, whose dyes are not as strongly bound as in modern pigmented automotive leathers. The binding matrix in the fixative stabilizes these particles so that they do not come loose when in contact with water or cleaners. According to the manufacturer, the formula particularly protects against wash-outs, which can occur with leather clothing, motorcycle clothing, or washable interior components. At the same time, the natural feel of the leather is preserved, because the fixation takes place within the top layer and does not create a visible film.

Preparation, application & wash-safe working method

Before you use Leather Fixative, the leather should be free of coarse dirt. The fixative is used either as a pre-treatment for leather washing or as an independent fixation. You apply it evenly to the surface, let it soak in briefly, and gently work the product in to bind excess dyes. Subsequently, depending on the application, the washing procedure or a gentle further treatment follows. It is important not to overdose, as a thin, even wetting is completely sufficient. For strongly dyeing leathers, a brief check for color stability is recommended. The fixation allows the material to be cared for and cleaned better later without new bleeding occurring.

Results, areas of application & benefits in detail

After application, the color remains significantly more stable, especially when wet. The leather appears calmer, more even, and safer for further processing. For car detailers, Leather Fixative is ideal if color-intensive interior parts could bleed during cleaning. In the fashion industry, the product prevents jackets, bags, or shoes from bleeding during washing or high humidity. Furniture and vintage car leather also benefit, as color migration is often a problem here. However, the fixative does not replace color refreshing or repair; it exclusively stabilizes existing pigments and prevents their mobilization.

Frequently Asked Questions about COLOURLOCK Leather Fixative

For which types of leather is the color fixative suitable?

For almost all types of leather: aniline, nubuck, pigmented leather, as well as washable fashion and upholstery leathers. Particularly effective on dyeing or delicate surfaces.

Does the leather color change due to the fixative?

No. The product merely fixes excess dyes, but does not change the color tone or the surface of the leather.

Can I wash or clean normally afterwards?

Yes. The fixative is designed to make washing or cleaning processes safer by stabilizing the color particles beforehand.

Do I need to rinse the product after fixing?

Only if a leather wash follows. For pure fixation without washing, even drying is sufficient.

Does the fixative also help against color transfer to clothing?

Yes, it significantly reduces the risk by inhibiting dye migration. For strongly dyeing leathers, repetition may be useful.

Last updated: 02.12.2025 — Author: Daniel (Detailing1)