| 摘要 |
The present invention relates to a cosmetic composition comprising: i) one or more dicarbonyl compounds corresponding to formula (I) below, and/or derivatives thereof and/or hydrates thereof and/or salts thereof: in which formula (I), R is as defined in the description, in a specific amount; ii) one or more acids different from the compound(s) i) as defined previously; and iii) one or more specific alkalinizing agents. The subject of the invention is also a process for straightening keratin fibres using ingredients i), ii) and iii) with a step of straightening by means of a straightening iron at a temperature of at least 150° C., preferably ranging from 150 to 250° C.; |
| 主权项 |
1. Cosmetic composition comprising:
i) one or more dicarbonyl compounds corresponding to formula (I) below, and/or derivatives thereof and/or hydrates thereof and/or salts thereof:in which formula (I):
R represents an atom or group chosen from i) hydrogen, ii) carboxyl —C(O)—OH, iii) linear or branched C1-C6 alkyl which is optionally substituted, preferably with at least one hydroxyl —OH radical, carboxyl radical or halogen radical such as Br; iv) optionally substituted phenyl, v) optionally substituted benzyl, iv) and v) preferably being optionally substituted with at least one —OH or —C(O)—OH radical; vi) an indolyl radical and vii) an imidazolylmethyl radical and its tautomers such aswith * representing the part linked to the rest of the molecule; the dicarbonyl compounds corresponding to formula (I), and/or derivatives thereof and/or hydrates thereof and/or salts thereof being present in the composition in an amount ranging from 5 to 15% in weight of the total weight of the composition;
ii) one or more acids different from the compound(s) i) as defined previously; and iii) one or more alkalinizing agents chosen from i) aqueous ammonia, ii) alkali metal or alkaline-earth metal carbonates or hydrogen carbonates, such as sodium carbonates or hydrogen carbonates or potassium carbonates or hydrogen carbonates, iii) alkali metal or alkaline-earth metal phosphates or (di)hydrogen phosphates, iv) alkali metal or alkaline-earth metal hydroxides, such as sodium or potassium hydroxides, or mixtures thereof, v) alkanolamines, such as monoethanolamine or trihydroxyethylamine, vi) oxyethylenated and/or oxypropylenated ethylenediamines, vii) amino acids and viii) the compounds of formula (II) below:in which formula (II) W is a divalent C1-C6 alkylene radical optionally substituted with one or more hydroxyl groups or a C1-C6 alkyl radical, and/or optionally interrupted with one or more heteroatoms such as O, or NRu; Rx, Ry, Rz, Rt and Ru, which may be identical or different, represent a hydrogen atom or a C1-C6 alkyl, C1-C6 hydroxyalkyl or C1-C6 aminoalkyl radical. |
