The subject of the present invention is a process for treating keratin fibers using an anhydrous dye composition comprising at least one compound of azomethine type comprising two pyrazolopyridine units of formula (I) or (II) and an aqueous composition. The invention also relates to a kit comprising an anhydrous dyeing composition and an aqueous composition.

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The subject of the present invention is a process for treating keratin fibers using an anhydrous dye composition comprising at least one compound of azomethine type comprising two pyrazolopyridine units of formula (I) or (II) and an aqueous composition. The invention also relates to a kit comprising an anhydrous dyeing composition and an aqueous composition.

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The present invention relates to the use, for dyeing or lightening keratin fibres, in particular human keratin fibres such as the hair, of a hand-held styling apparatus (1) equipped with at least one treatment surface (2d, 3d) partially or totally covered with at least one substrate (6) comprising a surface (6a) coated with at least one layer (6b) containing one or more dyes, preferably chosen from oxidation dyes and/or direct dyes, and/or one or more oxidizing agents. The invention also relates to an assembly (11, 24, 26) intended for dyeing or lightening keratin fibres, in particular human keratin fibres such as the hair, comprising at least one aqueous composition and at least one hand-held styling device (1) as defined above.

A process for dyeing keratinous material, in particular human hair, is disclosed. The method includes steps of applying an agent (a) and an agent (b) to the keratinous material. 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 ester of glycerol with a C.sub.2-C.sub.6 aliphatic carboxylic acid. The agent (b) comprises (b1) at least one sealing reagent. 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. A multi-component packaging unit (kit-of-parts) comprising, separately packaged, agents (a) and (b) is also disclosed, along with methods of making and using the same.

A process for dyeing keratinous material, in particular human hair, is disclosed. The method includes steps of applying an agent (a) and an agent (b) to the keratinous material. 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 ester of glycerol with a C.sub.2-C.sub.6 aliphatic carboxylic acid. The agent (b) comprises (b1) at least one sealing reagent. 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. A multi-component packaging unit (kit-of-parts) comprising, separately packaged, agents (a) and (b) is also disclosed, along with methods of making and using the same.

An additive is disclosed for use with existing hair coloring products that combines multiple hair dye sources and classifications to create a single precise color tone on demand. The additive salvages chemical parts from existing hair coloring products to create a multitude of new hair coloring options. The additive perfects the dye diffusion process using physics, electrochemical technology and chemical screening technology. The resultant additive mixed with an existing hair product solves many of the problems within the hair coloring industry and enhances safety through lower toxicity.

An additive is disclosed for use with existing hair coloring products that combines multiple hair dye sources and classifications to create a single precise color tone on demand. The additive salvages chemical parts from existing hair coloring products to create a multitude of new hair coloring options. The additive perfects the dye diffusion process using physics, electrochemical technology and chemical screening technology. The resultant additive mixed with an existing hair product solves many of the problems within the hair coloring industry and enhances safety through lower toxicity.

The present disclosure relates to agents for lightening keratinous fibers, in particular human hair, comprising (a) at least one oxidizing agent, (b) at least one complexing agent of the general formula (I),

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and (c) at least one radical inhibitor.

Provided is a composition for inhibiting hair graying, having an excellent effect of preventing the occurrence of gray hair, and a use thereof. A composition for inhibiting hair graying, of the presently claimed subject matter, activates the Wnt and β-catenin signaling pathway to promote melanin synthesis in hair, thereby having remarkably excellent hair graying (canities) inhibition, prevention, improvement, alleviation, delaying, or treatment effects.

The present invention relates to a composition for dyeing keratin fibres, comprising: one or more oxidation dyes; one or more basifying agents; one or more non-oxyalkylenated fatty substances that are liquid at room temperature in a content of less than or equal to 20% by weight relative to the total weight of the composition; one or more oxidizing agents; one or more oxyethylenated fatty alcohols with a number of oxyethylene units of greater than or equal to 10; one or more oxyethylenated fatty alcohols with a number of oxyethylene units of less than 10; one or more non-oxyethylenated fatty alcohols that are solid at room temperature; and one or more cationic polymers. The present invention also relates to a process for dyeing keratin fibres using such a composition, and also to a kit for preparing the said composition.