It is an object of the present disclosure to provide a method for treating keratinous material, in particular human hair, wherein there is applied to the keratinous material a first composition (A) comprising (A1) one or more organic C.sub.1-C.sub.6 alkoxy silanes and/or condensation products thereof, and a second composition (B) comprising (B1) a first cellulose and (B2) a second cellulose different from the first cellulose (B1).

It is an objective of the present disclosure to provide a method for coloring keratinous material, in particular human hair, comprising the following steps: Application of an agent (v) to the keratinous material, the agent (v) comprising: (v1) at least one anionic surfactant, Application of an agent (a) to the keratinous material, wherein the agent (a) comprises: (a1) at least one organic silicon compound selected from the group of silanes having one, two or three silicon atoms, and Application of an agent (b) to the keratinous material, wherein the agent (b) comprises: (b1) at least one sealing reagent, wherein at least one of the agents (a) and (b) further comprises at least one colorant compound selected from the group of pigments and/or direct dyes.

The present invention relates to a process for dyeing keratin fibres, in particular the hair, which consists in applying to the keratin fibres: at least one coat of at least a first composition (i) comprising at least one hydrophobic film-forming polymer, at least one volatile solvent and at least one pigment, and then, after drying, at least a second coat of at least a second composition (ii) comprising at least one hydrophobic film-forming polymer, at least one volatile solvent and at least one pigment, the pigments of compositions (i) and (ii) being qualitatively and/or quantitatively different.

The subject of the present invention is a process for treating keratin fibers using a) at least one silicone comprising at least one carboxylic acid anhydride group, b) at least one amino silicone, and c) at least one coloring agent chosen from pigments, direct dyes and mixtures thereof, the compounds a), b) and c) being applied together or separately, in one or more compositions.

Aqueous mixtures can include cellulose nanocrystals and sulfonated polyester, where a glass transition temperature (T.sub.g) of the sulfonated polyester is greater than 25° C. In some instances, exemplary aqueous mixtures also include one or more additives, such as pigment. Exemplary aqueous mixtures can be applied as a film that is typically hydrophobic and resilient against water at room temperature. Upon application of warm water, such as at temperatures of from about 30° C. to about 60° C., the film can be removed with no or limited abrasion and/or with no or little removal oils.

There is described a method for colouring hair, said method comprising treating hair with a composition comprising dihydroxyacetone (DHA), in free form or in salt form; optionally drying the hair; and heating the treated hair, including the applied DHA composition, to a temperature of from about 100° C. to about 250° C.

It is an object of the present disclosure to provide an agent for coloring keratinous material, in particular human hair, comprising (a1) at least one linear amino-functionalized silicone polymer, and (a2) at least one pigment, and (a3) at least one polysaccharide, exemplified in that the agent is free of silicone resins.

A second subject matter is a method for dyeing keratin material, wherein the agent is applied to the keratin material.

The present invention discloses new uses of coloured co-crystals and associated salts formed by co-crystallization reactions in the dye, ink and paint industries. The present invention also provides novel co-crystals for use in, for example, the dye, ink and/or paint industries.

A cosmetic activator system for activating a cosmetic is provided including: an activator having an energy source configured to emit an energy pulse and a controller; and an imprinter having an imprint pattern and at least one activation element configured to be in communication with the energy source, wherein the imprinter is configured to create an imprint on the cosmetic.

The disclosure relates to a dye composition comprising a combination of two extracts of Lawsonia inermis and a method for preparing thereof. The disclosure also relates to the cosmetic use of said composition for dyeing keratin fibers. Finally, the disclosure relates to a cosmetic method for dyeing keratin fibers comprising the application of such a composition.