The disclosure relates to thermal control of compositions for altering the color of hair, in particular to hair bleaching compositions comprising thermal control agents, hair color-altering compositions comprising the hair bleaching compositions and/or thermal control agents, methods for preparing and using the hair color-altering compositions, and kits comprising the hair bleaching compositions and/or thermal control agents.

The present application is directed to a cosmetic composition comprising melanoidins, wherein said melanoidins are characterized by having a weight average molecular weight (Mw) of from 200 daltons to 300 kDa, preferably from 1 to 300 kDa and more preferably from 1 to 100 kDa, for example from 10 to 100 kDa. The melanoidins are obtainable or are obtained by a process comprising the steps of: a) providing a particulate foodstuff which comprises melanoidins; b) treating said particulate foodstuff with an aqueous extractant solution having a pH greater than 7 to extract melanoidins as solute in the aqueous phase; c) physically separating said aqueous phase from the residual treated particulate foodstuff; d) fractionating the dispersed or dissolved components of said aqueous phase on the basis of molecular weight; and, e) dehydrating said fractionated aqueous phase to obtain at least one solid melanoidin fraction therefrom.

The objective of the present disclosure is a multi-component packaging unit (kit-of-parts) for dyeing keratinous material, in particular human hair, comprising separately prepared a first container comprising an agent (a), wherein the agent comprises (a): (a1) at least one amino-functionalized silicone polymer, and a second container comprising an agent (b), wherein the agent comprises (b): (b1) Water and (b2) a buffer system comprising at least one inorganic or organic acid (b2-I) and at least one salt of this acid (b2-II), and (b3) at least one color-imparting compound.

A second objective of the present disclosure is a corresponding method in which the two agents (a) and (b) are used.

A process for dyeing keratinous material, in particular human hair, is disclosed. The process comprises applying to the keratinous material an agent (a) and an agent (b). The agent (a) comprises: (a1) at least one organosilicon compound; and (a2) at least one color-imparting compound comprising at least one effect pigment comprising (A) a substrate platelet comprising synthetic mica and (β) a coating comprising at least a first metal oxide (hydrate) layer. The agent (b) comprises (b1) at least one sealing reagent. A multi-component packaging unit (kit-of-parts) for dyeing keratinous material is also provided, and comprises separately packaged containers including the agents or components thereof for use in the process.

The present invention relates to a composition (C) for the treatment of keratin fibers, comprising at least one (poly)carbodiimide compound chosen from the compounds of formula (I), and at least one coloring agent chosen from pigments, direct dyes, and mixtures thereof.

A fiber treatment agent composition comprising the following components (A) and (B), wherein a content of the component (A) is 0.05% by mass or more and 5.0% by mass or less, the content of the component (B) is 0.05% by mass or more and 10.0% by mass or less, and a mass ratio of the component (B) to the component (A), (B)/(A), is 150 or less: (A) a self-crosslinking compound; and (B) one or more color deepening agents selected from the group consisting of a nonvolatile silicone, a polyhydric alcohol polymer, a fatty acid ester, and an acrylic resin (excluding agents corresponding to the component (A)).

A method and a kit-of-parts are provided for dyeing keratinous material. The method includes applying a first agent to the keratinous material and applying an second agent to the keratinous material. The first agent includes at least one organic silicon compound. The second agent comprises at least one colorant compound and at least one film-forming polymer. The colorant compound includes at least one effect pigment including a substrate platelet including synthetic mica. The colorant compound further includes a coating including at least a first metal oxide (hydrate) layer.

A process for dyeing or coloring keratin material, in particular human hair, using a C.sub.1-C.sub.6 organic alkoxysilane and an acidifying agent, is disclosed. The process comprises applying on the keratinous material a first composition (A), and a second composition (B). The first composition (A) comprises (A1) one or more organic C.sub.1-C.sub.6 alkoxysilanes and/or condensation products thereof, and (A2) at least one colorant compound selected from the group of pigments and direct dyes. The second composition (B) comprises (B1) at least one acidifying agent. A kit-of-parts for use in carrying out the process is also disclosed.

The instant disclosure generally relates to a multicomponent composition for coloring mammalian or synthetic keratin fibers, the multicomponent composition comprising first, second, third and fourth components. The first component includes an organic polymer, the second component includes an in situ linking material, the third component includes a base compound and the fourth component includes a catalyst or other substance. One or more of the components includes pigment microparticles. The multicomponent composition in situ links upon application, forms a solid coating on treated material such as hair and has a substantially long color remanence following development. Methods of using such compositions are also described herein.

A hair color retouch kit, components of the kit, and methods of use and doing business. The kit can include one or more mixing containers. In one embodiment, a mixing container provides a colorant compartment for sealingly or separately containing a custom hair coloring formulation and peroxide compartment for sealingly or separately containing peroxide. The mixing container(s) can be used by a professional hair colorist to provide a hair coloring client with custom hair coloring formulation and peroxide that can be mixed and applied by or for the client to hair regrowth that occurs after a hair coloring session with the professional. The kit can provide other components as desired, such as a mixing spatula, an applicator brush, and instructions for example. The kit can be packaged in attractive and efficient packaging, include indicia identifying the source of the kit, and be customized to promote the colorist, salon, or other entity.