Method for dyeing keratin material, comprising the use of an organic C1-C6 alkoxy silane and a copolymer of styrene and maleic acid (anhydride)

A multi-component packaging unit (kit-of-parts) for dyeing keratinous material, comprising a separately assembled

• first container having a first composition (A) comprising (A1) one or more organic C1-C6 alkoxysilanes and/or condensation products thereof, and
• (A2) at least one colorant compound chosen from pigments and direct dyes, and
• second container having a second composition (B) comprising (B1) a copolymer of styrene and maleic acid (anhydride).

A multi-component packaging unit (kit-of-parts) for dyeing keratinous material, comprising a separately assembled

• first container having a first composition (A′) comprising one or more organic C1-C6 alkoxysilanes and/or condensation products thereof,
• second container with a second composition (A″) comprising at least one colorant compound chosen from pigments and direct dyes, and
• third container having a third composition (B) comprising a copolymer of styrene and maleic acid (anhydride).