申请人:L'OREAL
公开号:US10449134B2
公开(公告)日:2019-10-22
The present invention relates to a process for treating keratin fibers, in particular the hair, comprising:
a) the application, to said fibers, of a composition having a pH greater than or equal to 8, at 25° C., and comprising at least one amino acid chosen from those of formulae (I) and (II) below, and also the betaine forms thereof, the optical isomers thereof, the solvates thereof such as the hydrates, and the organic or inorganic base or acid salts thereof: in which formulae (I) and (II):
R represents a hydrogen atom, or a linear or branched, preferably linear, C1-C5 alkyl group, said alkyl group being optionally substituted with at least one group chosen from hydroxyl, —C(O)—OH, —S(O)2—OH, —C(O)—O−, M+, and —S(O)2—O−, M+, with M+ representing a cationic counterion such as an alkali metal, alkaline-earth metal, or ammonium,
n is 0 or 1;
b) followed by a step of straightening/relaxing the keratin fibers by means of a straightening iron at a temperature of at least 100° C.
本发明涉及一种处理角蛋白纤维,特别是头发的工艺,包括
a) 在所述纤维上施用一种组合物,该组合物在 25° C 时的 pH 值大于或等于 8,并包含至少一种选自下式(I)和(II)的氨基酸,以及其甜菜碱形式、其光学异构体、其溶解物(如水合物)和其有机或无机碱或酸盐:其中式(I)和(II):
R 代表氢原子,或直链或支链,优选直链 C1-C5 烷基,所述烷基可任选被至少一个选自羟基、-C(O)-OH、-S(O)2-OH、-C(O)-O-、M+ 和-S(O)2-O-、M+ 的基团取代,其中 M+ 代表阳离子反离子,如碱金属、碱土金属或铵、
n 为 0 或 1;
b) 然后用拉直熨斗在至少 100 摄氏度的温度下拉直/放松角蛋白纤维。