Two-component hair dye for non-oxidative hair dyeing

A two-component system with glycosylated dyes and β-glucosidase enhances the handling, storage stability, and coloring efficacy of natural hair dyes, addressing issues in existing non-oxidative hair coloring products.

WO2026130934A1PCT designated stage Publication Date: 2026-06-25HENKEL KGAA
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
HENKEL KGAA
Filing Date
2025-11-19
Publication Date
2026-06-25

AI Technical Summary

Technical Problem

Existing non-oxidative hair coloring products based on natural dyes face challenges with handling, storage stability, and coloring properties, particularly in achieving long-lasting and consistent color results.

Method used

A two-component system comprising a 'color gel' with glycosylated dyes or dye precursors and an 'enzyme gel' containing β-glucosidase, utilizing xanthan gum and scleroglucan gum as thickeners, to enhance application ease and stability.

Benefits of technology

Improves handling, storage stability, and coloring results by ensuring easier application and consistent color development, particularly with natural dyes, without the use of oxidizing agents.

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Abstract

The invention relates to a cosmetic product for non-oxidative dyeing of keratin fibers, in particular human hair, comprising two compositions that are separate from each other, wherein the first composition comprises at least one glycosylated dye or dye precursor, in particular glycosylated natural dye or natural dye precursor, and wherein the second composition comprises at least one β-glucosidase (EC 3.2.1.21). The invention also relates to a method for non-oxidative dyeing of keratin fibers, in particular human hair, using a cosmetic product according to the invention.
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