The present disclosure relates to compositions for altering the tone or color of the hair comprising at least one amino acid, at least one carboxylic acid, monoethanolamine, at least one oxidation base chosen from toluene-2,5-diamine, acid salts thereof, or solvates thereof, and a coupler system comprising one or more couplers chosen from 2,4-diaminophenoxyethanol, meta-aminophenol, derivatives thereof, addition salts thereof, solvates thereof, solvates of salts thereof, or mixtures thereof. The disclosure also relates to methods of using the compositions and kits comprising the compositions.

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.

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 method for strengthening and repairing keratin fibres including providing a caustic as well as an acidic crosslinking composition, wherein the caustic crosslinking composition comprises an at least bi-functional Brønsted-base and the acidic crosslinking composition comprises an at least bi-functional organic acid, and a cosmetically acceptable carrier; applying the caustic as well as the acidic crosslinking composition to keratin fibres; and optionally mixing the caustic crosslinking composition into a commercially available hair colouring or hair bleaching composition.

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.

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.

The disclosure relates to hair color base compositions comprising an alkoxylated fatty alcohol, a fatty acid, a fatty alcohol, a buffer system, and optionally a thickening agent and/or colorant compound, hair color altering compositions comprising the hair color base, and kits and methods for altering the color of keratinous fibers such as hair.

The disclosure relates to hair color base compositions comprising an alkoxylated fatty alcohol, a fatty acid, a fatty alcohol, a buffer system, and optionally a thickening agent and/or colorant compound, hair color altering compositions comprising the hair color base, and kits and methods for altering the color of keratinous fibers such as hair.

Agents, processes, and kits-of-parts are provided for dyeing keratinous material. An agent for dyeing keratinous material includes (a1) at least one non-ionic emulsifier having an HLB value of from 4.0 to 12.0, (a2) at least one pigment, and (a3) at least one amino-functionalized silicone polymer.

Agents, processes, and kits-of-parts are provided for dyeing keratinous material. An agent for dyeing keratinous material includes (a1) at least one non-ionic emulsifier having an HLB value of from 4.0 to 12.0, (a2) at least one pigment, and (a3) at least one amino-functionalized silicone polymer.