Abstract: The present invention relates to a process for stripping keratin fibres, and in particular human keratin fibres such as the hair, dyed with oxidation dyes and/or direct dyes, using a composition obtained by extemporaneous mixing of an anhydrous or aqueous composition (A) comprising at least one suitably selected sulfinic acid derivative and an aqueous composition (B) with a pH of less than (5), comprising at least one organic acid other than the compounds of formula (I), with a pKa of less than or equal to (4) when the composition (A) is aqueous, the pH of the mixture of the two compositions (A) and (B) being less than or equal to (5). The invention also relates to a composition for stripping the artificial colour from keratin fibres, comprising at least one suitably selected sulfinic acid derivative and at least one thickener chosen from anionic polymers and nonionic polymers.

Abstract: The present invention relates to an aqueous oxidizing composition for treating keratin fibers, comprising: —at least one oxidizing agent; —at least 40% by weight of at least one oil; —at least one phosphoric acid mineral salt; —the pH of the oxidizing composition being less than or equal to 5. The composition in accordance with the invention may be used for dyeing, bleaching or permanently reshaping keratin fibers. It produces ready-to-use compositions that give good dyeing, bleaching or permanent reshaping properties without degrading the keratin fibers and without impairing their cosmetic properties. Furthermore, the composition in accordance with the invention shows good stability over time, especially to storage at high temperatures, for example of about 45° C.

Abstract: The present invention relates to a process for dyeing or lightening keratin fibres, comprising the step of extemporaneously mixing at the time of use two compositions (A) and (B) and of applying the said mixture to the said fibres; the said mixture comprising at least 25% by weight of fatty substances relative to the total weight of the composition obtained from the mixing of two compositions (A)+(B); with: —(A) representing a composition in direct emulsion form whose content of oil(s) ii) is at least 30% by weight relative to the weight of composition (A), and comprising: i) at least one nonionic surfactant that is solid at room temperature and at atmospheric pressure, with an HLB ranging from 1.5 to 10; ii) at least one basifying agent; Hi) optionally at least one additional surfactant other than the solid nonionic surfactants (i), iv) optionally at least one dye; and—(B) representing a composition comprising at least one chemical oxidizing agent.

Abstract: The present invention relates to a process for bleaching keratin fibers which consists in applying to the keratin fibers a composition A, which is in compressed form, comprising at least one persulfate, in the presence of an aqueous composition B.

Abstract: The invention relates to a composition for dyeing human keratin fibers such as the hair, in foam form, comprising at least one alkaline agent, at least one oxidizing agent, at least one oxidation dye precursor and at least one nonionic surfactant of formula (I) R—0—(CH2—CH2—0)n—H (I) in which R represents a linear or branched C10-C18 alkyl or alkenyl radical, n represents a number ranging from 10 to 15. The invention also relates to a process for dyeing human keratin fibers using this composition. A subject of the invention is also a device for dyeing keratin fibers, comprising the composition of the invention in liquid form and a foam dispenser for delivering the composition in the form of a foam.

Abstract: The present invention relates to a process for dyeing or lightening keratin fibres, comprising the step of extemporaneously mixing at the time of use two compositions (A) and (B) and of applying the said mixture to the said fibres; the said mixture comprising at least 25% by weight of fatty substances relative to the total weight of the composition obtained from the mixing of two compositions (A)+(B); with: —(A) representing a composition in direct emulsion form whose content of oil(s) ii) is at least 30% by weight relative to the weight of composition (A), and comprising: i) at least one nonionic surfactant that is solid at room temperature and at atmospheric pressure, with an HLB ranging from 1.5 to 10; ii) at least one basifying agent; Hi) optionally at least one additional surfactant other than the solid nonionic surfactants (i), iv) optionally at least one dye; and—(B) representing a composition comprising at least one chemical oxidizing agent.

Abstract: The present invention relates to an agent for dyeing and/or bleaching keratinous fibers, comprising: a water-in-oil emulsion (A) comprising one or more basifying agents, water, one or more surfactants having an HLB of less than 8, chosen from oxyalkylenated and/or glycerolated nonionic surfactants, and from 30 to 70% by weight, with respect to the total weight of the emulsion (A), of one or more oils not comprising a carboxylic acid functional group, and a second composition (B) comprising one or more oxidizing agents, the total amount of oil(s) not comprising a carboxylic acid functional group in the mixture of the emulsion (A) and of the composition (B) representing at least 20% by weight, with respect to the total weight of the mixture of these two compositions. The present invention also relates to a method for dyeing and/or bleaching keratinous fibers employing such an agent and to a kit comprising it.

Abstract: The subject of the present invention is a process for bleaching keratin fibres consisting in applying to said fibres a bleaching composition resulting from the mixing: —of at least one anhydrous composition A comprising at least one peroxygenated salt, —of at least one aqueous composition B comprising at least one basifying agent, and —of at least one composition C comprising at least one oxidizing agent and at least 3% by weight of fatty substance relative to the total weight of the composition C, said bleaching composition comprising at least 10% by weight of fatty substance.

Abstract: The present invention relates to a process for dyeing or lightening keratin fibers, comprising the step of extemporaneously mixing at the time of use two compositions (A) and (B) and of applying the said mixture to the said fibers; the said mixture comprising at least 25% by weight of fatty substances relative to the total weight of the composition obtained from the mixing of two compositions (A)+(B); with: —(A) representing a composition in direct emulsion form whose content of oil(s) ii) is at least 30% by weight relative to the weight of composition (A), and comprising: i) at least one nonionic surfactant that is solid at room temperature and at atmospheric pressure, with an HLB ranging from 1.5 to 10; ii) at least one basifying agent; Hi) optionally at least one additional surfactant other than the solid nonionic surfactants (i), iv) optionally at least one dye; and —(B) representing a composition comprising at least one chemical oxidizing agent.

Abstract: The present invention relates to an aqueous oxidizing composition for treating keratin fibres, comprising:—at least one oxidizing agent;—at least 40% by weight of at least one oil;—at least one phosphoric acid mineral salt;—the pH of the oxidizing composition being less than or equal to 5. The composition in accordance with the invention may be used for dyeing, bleaching or permanently reshaping keratin fibres. It produces ready-to-use compositions that give good dyeing, bleaching or permanent reshaping properties without degrading the keratin fibres and without impairing their cosmetic properties. Furthermore, the composition in accordance with the invention shows good stability over time, especially to storage at high temperatures, for example of about 45° C.

Abstract: The present invention relates to a process for dyeing or lightening human keratin fibers, which consists in extemporaneously mixing at the time of use two compositions (A) and (B) and in applying the mixture to the fibers; the said mixture comprising at least 25% by weight of fatty substances relative to the total weight of the mixture of compositions (A)+(B); with: composition (A) being in the form of a direct emulsion comprising: at least 30% by weight of oil(s) (i); at least one fatty alcohol that is solid at room temperature and at atmospheric pressure (ii); at least one fatty ester, which is solid at room temperature and at atmospheric pressure (iii); at least one surfactant (iv); at least one basifying agent (v) and/or at least one dye (vi) chosen from oxidation dyes and direct dyes, and mixtures thereof; composition (B) comprising, in a cosmetically acceptable medium, at least one oxidizing agent. The invention also relates to a non-oxidizing composition (A) in the form of a direct emulsion.

Abstract: The invention relates to a composition for dyeing human keratin fibres such as the hair, in foam form, comprising at least one alkaline agent, at least one oxidizing agent, at least one oxidation dye precursor and at least one nonionic surfactant of forty (I) R-0-(CH2—CH2-0)n-H (I) in which R represents a linear or branched C10-C18 alkyl or alkenyl radical, n represents a number ranging from 10 to 15. The invention also relates to a process for dyeing human keratin fibres using this composition. A subject of the invention is also a device for dyeing keratin fibres, comprising the composition of the invention in liquid form and a foam dispenser for delivering the composition in the form of a foam.

Abstract: The present invention relates to a process for dyeing or lightening human keratin fibers, which consists in extemporaneously mixing at the time of use two compositions (A) and (B) and in applying the mixture to the fibers; the said mixture comprising at least 25% by weight of fatty substances relative to the total weight of the mixture of compositions (A) (B); with: composition (A) being in the form of a direct emulsion comprising: at least 30% by weight of oil(s) (i); at least one fatty alcohol having at least 20 carbon atoms in its longest hydrocarbon chain (ii); at least one surfactant (iii); at least one basifying agent (iv); and optionally at least one dye chosen from oxidation dyes and direct dyes, and mixtures thereof (v); composition (B) comprising at least one oxidizing agent. The invention also relates to compositions (A), the mixture of the aforementioned compositions (A) and (B), and a multi-compartment device.

Abstract: The present invention relates to a process for bleaching keratin fibres which consists in applying to the keratin fibres a composition A, which is in compressed form, comprising at least one persulfate, in the presence of an aqueous composition B.

Abstract: The present invention relates to a process for dyeing or lightening keratin fibres, comprising the step of extemporaneously mixing at the time of use two compositions (A) and (B) and of applying the said mixture to the said fibres; the said mixture comprising at least 25% by weight of fatty substances relative to the total weight of the composition obtained from the mixing of two compositions (A)+(B); with: —(A) representing a composition in direct emulsion form whose content of oil(s) ii) is at least 30% by weight relative to the weight of composition (A), and comprising: i) at least one nonionic surfactant that is solid at room temperature and at atmospheric pressure, with an HLB ranging from 1.5 to 10; ii) at least one basifying agent; Hi) optionally at least one additional surfactant other than the solid nonionic surfactants (i), iv) optionally at least one dye; and —(B) representing a composition comprising at least one chemical oxidizing agent.

Abstract: The present invention relates to a process for dyeing or lightening human keratin fibres, which consists in extemporaneously mixing at the time of use two compositions (A) and (B) and in applying the mixture to the fibres; the said mixture comprising at least 25% by weight of fatty substances relative to the total weight of the mixture of compositions (A) (B); with: composition (A) being in the form of a direct emulsion comprising: at least 30% by weight of oil(s) (i); at least one fatty alcohol having at least 20 carbon atoms in its longest hydrocarbon chain (ii); at least one surfactant (iii); at least one basifying agent (iv); and optionally at least one dye chosen from oxidation dyes and direct dyes, and mixtures thereof (v); composition (B) comprising at least one oxidizing agent. The invention also relates to compositions (A), the mixture of the aforementioned compositions (A) and (B), and a multi-compartment device.

Abstract: The present invention relates to a process for stripping keratin fibres, and in particular human keratin fibres such as the hair, dyed with oxidation dyes and/or direct dyes, using a composition obtained by extemporaneous mixing of an anhydrous or aqueous composition (A) comprising at least one suitably selected sulfinic acid derivative and an aqueous composition (B) with a pH of less than (5), comprising at least one organic acid other than the compounds of formula (I), with a pKa of less than or equal to (4) when the composition (A) is aqueous, the pH of the mixture of the two compositions (A) and (B) being less than or equal to (5). The invention also relates to a composition for stripping the artificial colour from keratin fibres, comprising at least one suitably selected sulfinic acid derivative and at least one thickener chosen from anionic polymers and nonionic polymers.

Abstract: The present invention relates to an agent for dyeing and/or bleaching keratinous fibres, comprising: a water-in-oil emulsion (A) comprising one or more basifying agents, water, one or more surfactants having an HLB of less than 8, chosen from oxyalkylenated and/or glycerolated nonionic surfactants, and from 30 to 70% by weight, with respect to the total weight of the emulsion (A), of one or more oils not comprising a carboxylic acid functional group, and a second composition (B) comprising one or more oxidizing agents, the total amount of oil(s) not comprising a carboxylic acid functional group in the mixture of the emulsion (A) and of the composition (B) representing at least 20% by weight, with respect to the total weight of the mixture of these two compositions. The present invention also relates to a method for dyeing and/or bleaching keratinous fibres employing such an agent and to a kit comprising it.

Abstract: Disclosed herein is a device having one or more compartments, for dyeing keratin fibers, wherein a first compartment contains a dye composition free of oxidizing agent, comprising at least one hair dye and at least one polycondensate of ethylene oxide and propylene oxide, and optionally a second compartment contains an oxidizing composition. Also disclosed is an agent for dyeing and/or bleaching keratin fibers, obtained by mixing a composition A comprising at least one alkaline agent with a composition B comprising at least one oxidizing agent, compositions A and/or B comprising at least one fatty substance free of carboxylic acid groups, at least one polycondensate of ethylene oxide and propylene oxide, and a system of nonionic surfactants, with a weighted HLB of greater than or equal to 8, the amount of fatty substance being greater than 20% of the total weight of the dyeing and/or bleaching agent.

Abstract: The invention relates to a device having one or more compartments, or “kit”, for dyeing keratin fibres, in which a first compartment contains a dye composition free of oxidizing agent, comprising at least one hair dye and at least one polycondensate of ethylene oxide and propylene oxide consisting of polyethylene glycol and polypropylene glycol blocks, and optionally a second compartment contains an oxidizing composition.