The present invention relates to a process for coloring keratin fibers, preferably hair, comprising the steps of: (i) applying onto the keratin fibers a composition comprising (a) at least one compound chosen from alkylaminosulfonic acids and those of the formula (I) and (II), (b) at least one direct dye, and (c) at least one alkaline agent; (ii) heating the keratin fibers; and (iii) optionally rinsing and/or drying the keratin fibers. The present invention can provide superior coloring efficiency, such as color intensity and color lastingness.

The subject of the present disclosure is a process for dyeing keratinous material, in particular human hair, comprising the following steps: applying 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

(a2) at least one coloring compound comprising at least one effect pigment comprising α) a substrate platelet and β) a coating, wherein the coating comprises at least one layer that has been wet-chemically prepared using a metal alkoxide and an organosilicon compound having a basic group; and applying an agent (b) to the keratinous material, wherein the agent (b) comprises: (b1) at least one sealing reagent.

A hair-colouring composition comprising an estolide ester derived from ricinoleic acid and direct dyes.

Processes and a multi-component packaging unit (kit-of-parts) are provided for decolorizing keratinous material which has been colored by the application of at least one pigment. A process includes applying to the keratinous material a decolorizing agent comprising at least one anionic surfactant, and having a pH value of 1.0 to 3.5, and rinsing the decolorization agent from the keratinous material after a contact time.

The subject of the present disclosure is a process for dyeing keratinous material, in particular human hair, comprising the following steps: (1) Providing an agent (a), wherein the agent (a) comprises: (a1) at least one amino-functionalized silicone polymer, (2) Providing an agent (b), wherein the agent (b) comprises: (b1) Water and (b2) at least one fat component and (b3) at least one colorant compound, (3) Preparation of an application mixture by mixing agents (a) and (b), (4) Apply the application mixture prepared in step (3) to the keratinous material, (5) Exposure of the application mixture applied in step (4) to the keratinous material; and (6) Rinse the application mixture with water.

A second object of the present disclosure is a multi-component packaging unit which contains the two agents (a) and (b) in two separately assembled containers.

A process is provided for dyeing keratinous material. The process includes (1) providing an agent (a) that includes (a1) at least one amino-functionalized silicone polymer and (a2) at least one colorant compound. The process further includes (2) providing an agent (b) that includes (b1) water and (b2) at least one fat component. The method includes (3) preparing an application mixture by mixing agents (a) and (b) and (4) applying the application mixture to the keratinous material. Further, the method includes (5) exposing the application mixture to the keratinous material and (6) rinsing the application mixture with water.

An agent for dyeing keratinous material is provided. The agent includes (a1) at least one amino-functionalized silicone polymer and (a2) at least one color-imparting compound. Further, the agent includes (a3) at least one preservative and (a4) at least one fat component.

Removable hair coloring compositions are described herein that include: at least one hair color composition or compound; and at least one sealing component or compound, wherein at least one of the at least one hair color composition or compound, or the at least one sealing component or compound can be physically dissolved, physically removed, or a combination thereof when mixed with at least one natural oil. In some embodiments, removable hair coloring compositions further include at least one preparation stage component or compound.

An agent for dyeing keratinous material is provided. The agent includes at least one amino-functionalized silicone polymer and at least one color-imparting compound. Further, the agent includes at least one preservative and at least one non-ionic surfactant from the group of addition products of ethylene oxide and C.sub.8-C.sub.24 fatty alcohols.

A process for dyeing keratinous material is provided. The process includes (1) applying a coloring agent (a) to the keratinous material. The coloring agent (a) includes (a1) at least one amino-functionalized silicone polymer and (a2) at least one colorant compound. The method further includes (2) allowing the coloring agent (a) to act on the keratinous material for a period of 15 seconds to 10 minutes, and (3) rinsing out the dye (a) under running water for a period of 15 seconds to 10 minutes. In the process, no further cosmetic agent other than the coloring agent (a) is used.