The present invention relates to a composition for dyeing keratin fibres comprising, in a cosmetically acceptable medium of acidic pH, the pH of which is preferably less than 5, one or more direct dyes of triarylmethane structure, which are preferably cationic. The invention also relates to a process for dyeing keratin fibres using said composition and also to a use for dyeing keratin fibres.

The subject of the present disclosure is a method for coloring of human hair, comprising the following steps in the specified sequence A) Mixing a first component (K1) with a second component (K2) to produce a first mixture (M1), B) Mixing the mixture (M1) with a third component (K3) to produce a second mixture (M2), C) Application of the mixture (M2) on the hair, D) Allowing the mixture (M2) to take effect for a period of from about 30 seconds to about 45 minutes, E) Rinsing the mixture (M2) from the hair, wherein the first component (K1) is a dye preparation comprising at least one oxidation dye precursor, and the second component (K2) is a color diluent which does not contain any oxidation dye precursors or oxidants andthe third component (K3) is an oxidant preparation comprising at least one oxidant.

The present invention relates to a composition for dyeing keratin fibres comprising, in a cosmetically acceptable medium: one or more direct dyes of triarylmethane structure, one or more amino silicones and one or more surfactants. The invention also relates to a process for dyeing keratin fibres using said composition and also to a use for dyeing keratin fibres.

There is provided a compound represented by the following general formula (1).
[Chem. 1]
(X)(Z)(1) (in which, X represents a basic dye having at least one amino group having 0 to 20 carbon atoms which may have a substituent, and Z represents a non-coloring anion including an amino acid.)

A novel class of 3-halo-1H-indol-4-amine derivatives, particularly for dyeing keratin fibers, the azomethine dyes formed from them, their uses as a coupler for dyeing keratin fibers, hair dyeing compositions comprising them, method of dyeing hair thereof, and a hair dyeing kit thereof are disclosed. The products of the oxidative coupling with hair dye primary intermediates, particularly pyrazole derivative, a p-phenylenediamine derivative, a p-aminophenol derivative, have improved fastness properties over currently used violet-blue to blue azomethine dyes.

C

The present falls within the field of cosmetics and relates to a cosmetic product for oxidatively changing the colour of keratinous fibres, particularly human hair. An exemplary cosmetic product includes (i) at least one cosmetic composition (KM) comprising (a) at least one oxidising compound, and (b) two or more thickening agents, and (ii) at least one cosmetic dye composition (FZ). The oxidising compound is a solid oxidising agent and is selected from the group of a percarbonate salt, a perborate salt and percarbamide salt. Further, the two or more thickening agents comprise an at least partially ionic polysaccharide and a substantially non-ionic polysaccharide. Also described is a method for dyeing hair.

The present disclosure pertains to the field of cosmetics and concerns a cosmetic product for changing the natural colour of keratinous fibres, in particular human hair, comprising (i) at least one package (VP) comprising a water-soluble film (F), (ii) at least one cosmetic composition (KM) which is packaged in the package (VP) and contains at least one oxidizing compound, (iii) at least one cosmetic colour composition (FZ) which is packaged in the package (VP), wherein the oxidizing compound is a solid oxidizing agent. Furthermore, the present disclosure relates to a method for colouring hair.

The present disclosure concerns a cosmetic product for changing the natural colour of keratinous fibres, in particular human hair, which contains at least one package (VP) as well as a cosmetic composition (KM) contained in this package (VP). The package is formed from a multilayer film (F) which contains at least two polymer layers (P1) and (P2) as well as at least one barrier layer (BS). The cosmetic composition comprises at least one oxidizing compound and at least one thickening agent, wherein the oxidizing compound is a solid oxidizing compound, in particular a percarbonate. The cosmetic product is in the form of a double sachet in which a colour composition (FZ) is provided in addition to the cosmetic composition (KM).

The present invention deals with organic cosmetic active molecules encapsulation into temperature-responsive and pH-responsive oligo(ethylene glycol)-based biocompatible microgels that are incorporated into cosmetic compositions for controlled delivery on skin or hair.

The present invention relates to dissymmetric azomethine direct dyes of formula (I) and the leuco forms thereof of formula (II), and also to the use thereof for dyeing keratin fibres, in particular human keratin fibres such as the hair:

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in which formula (I) or (II) R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, n and n are as defined in the description.

The compounds of formula (I) or (II) according to the invention can give powerful, chromatic and sparingly selective colourings with good colour build-up, which are resistant to the various attacking factors to which keratin fibres may be subjected, such as inclement weather, light, washing and perspiration.