Composition comprising a derivative of hermatoxylin, of hematein, of brazilin or of brazilein, metal salt, hydrogen peroxide, and (bi)carbonate and hair dyeing method therewith
AssigneeL'Oreal S. A.
InventorsFrédéric Guerin, Luc Gourlaouen
Life of this patent
Estimating the term…
Abstract
The disclosure relates to methods for dyeing keratinous fibers by treatment of said fibers with i) at least one entity chosen from hematoxylin, hematein, brazilin, brazilein, and their derivatives, ii) at least one metal salt, iii) hydrogen peroxide or at least one system which generates hydrogen peroxide and iv) at least one (bi)carbonate. The disclosure also relates to multicompartment devices and compositions comprising the ingredients i), ii), iii) and iv).
Claims21
A method for dyeing keratinous fibers, comprising treating said fibers with:
- i) at least one entity chosen from compound chosen from synthetic or natural compounds of formulae (I) and (II), their mesomeric forms, their stereoisomers, their addition salts with an acid or base that is cosmetically acceptable, and their hydrates:
- and wherein:
- represents a single or conjugated double carbon-carbon bond;
- X represents either:
- R1, R2, R3, R4, R5 and R6, which are identical or different, are chosen from a hydrogen atom, a hydroxy group, an optionally substituted alkyl group, optionally substituted alkoxy, and an optionally substituted acyloxy group;
- ii) at least one metal salt,
- iii) hydrogen peroxide or at least one system which generates hydrogen peroxide, and
- iv) at least one (bi)carbonate.
A cosmetic dyeing composition comprising:
- i) at least one entity chosen from compounds chosen from synthetic or natural compounds of formulae (I) and (II), their mesomeric forms, their stereoisomers, their addition salts with an acid or base that is cosmetically acceptable, and their hydrates:
- and wherein:
- represents a single or conjugated double carbon-carbon bond;
- X represents either:
- R1, R2, R3, R4, R5 and R6, which are identical or different, are chosen from a hydrogen atom, a hydroxy group, an optionally substituted alkyl group, optionally substituted alkoxy, and an optionally substituted acyloxy group;
- ii) at least one metal salt,
- iii) hydrogen peroxide or at least one system which generates hydrogen peroxide, and
- iv) at least one (bi)carbonate.
A multicompartment device comprising from 2 to 5 compartments comprising from 2 to 5 compositions in which the ingredients
- i) at least one entity chosen from compounds chosen from synthetic or natural compounds of formulae (I) and (II), their mesomeric forms, their stereoisomers, their addition salts with an acid or base that is cosmetically acceptable, and their hydrates:
- and wherein:
- represents a single or conjugated double carbon-carbon bond;
- X represents either:
- R1, R2, R3, R4, R5 and R6, which are identical or different, are chosen from a hydrogen atom, a hydroxy group, an optionally substituted alkyl group, optionally substituted alkoxy, and an optionally substituted acyloxy group;
- ii) at least one metal salt,
- iii) hydrogen peroxide or at least one system which generates hydrogen peroxide, and
- iv) at least one (bi)carbonate,
- and optionally water are distributed.
Dependencies are inferred from the claim text.