Method for dyeing keratin material, comprising the use of an organic C1-C6 alkoxy silane and tannic acid

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

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

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

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