Assembly containing at least one dyeing substrate and at least one protective substrate comprising one or more preservatives, dispensing means, and dyeing process The present invention relates to the field of dyeing keratin fibres and more particularly to the field of hair dyeing. The present invention relates to an assembly 2 containing at least one dyeing substrate 3, and at least one protective substrate 4a, 4b comprising one or more preservatives, and it being understood that the dyeing substrate(s) 3 are different from the protective substrate(s) 4a, 4b. The present invention also relates to a means for dispensing 1 the assembly 2, and also to a process for dyeing keratin fibres using said assembly 2.

Oxidation dyeing process using a substrate bearing at least one oxidation dye, several preservatives and an oxidizing aqueous composition The present invention relates to a process for the oxidation dyeing of keratin fibres, in particular human keratin fibres such as the hair, comprising a step of application, to said keratin fibres, i) of a substrate comprising on its surface one or more oxidation dyes, one or more thiolated reducing agents and one or more organic reducing agents of reductone type, and a step of application, to said keratin fibres, ii) of an oxidizing aqueous composition comprising one or more oxidizing agents. The present invention also relates to a process for preparing said substrate. The invention also relates to an element in sheet form, pretreated by a composition comprising one or more oxidation dyes, one or more thiolated reducing agents, and one or more organic reducing agents of reductone type.

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: ##STR00001##
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.

The instant disclosure relates to hair coloring base compositions and developer compositions that can be incorporated into a hair color cartridge, which combines the compositions and dispenses them onto hair. The hair color cartridge includes: (a) one or more hair coloring base compositions and; (b) one or more developer compositions, which can be combined to form an active hair coloring composition and dispensed onto hair. The hair coloring base compositions typically include one or more oxidative dye precursors; one or more alkalizing agents; one or more reducing agents; optionally, one or more cationic conditioning polymers; one or more surfactants; one or more water-soluble solvents; and water. The developer compositions typically include one or more oxidizing agents; one or more surfactants; and water. The unique components and fluid characteristics of the various compositions are such that devices or appliances comprising them accurately combine and dispense the hair coloring base composition(s) with the developer composition(s) in a predetermined ratio with excellent consistency for application to hair.

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.

A dye composition I may include: a) oxidative dye(s); b) anionic polymer thickener(s); and c) antioxidant(s) including thiol-derived reducer(s). A kit may include (1) the dye composition I and (2) oxidizing composition II, including at least one oxidant. The oxidation base may include a para-phenylenediamine, bis(phenyl)alkylenediamine, para-aminophenol, ortho-aminophenol, heterocyclic base, or mixture thereof, optionally in addition salt form.

Disclosed are fragrance accords each containing (i) at least 7 wt % of one or more Class 1 fragrance ingredients, (ii) 5 to 85 wt % of one or more Class 2 fragrance ingredients, and (iii) 0 to 80 wt % of one or more Class 3 fragrance ingredients. The Classes 1, 2, and 3 fragrance ingredients are defined by experimental velocity. Also disclosed are delivery systems and consumer products containing such a fragrance accord.

The present invention relates to novel cationic 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: (I) (II) in which formula (I) or (II) X.sub.1, X.sub.2, 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) 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. ##STR00001##

The present disclosure provides composition having at least one leuco composition conforming to Formula (I):
Ar.sup.1Ar.sup.2Ar.sup.3CH(I)
wherein Ar.sup.2 and Ar.sup.3 are independently a carbocyclic aryl or heteroaryl, and Ar.sup.1 is selected from the group consisting of: unsubstituted phenyl, electron deficient carbocyclic aryl, and heteroaryl. The present disclosure also provides a method of detecting an authentic composition and test kits for detecting authentic compositions.

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).