The present invention relates to i) a process for treating keratin materials, in particular human keratin fibres, comprising the application of a composition comprising at least one bisthiolactone of formula (I), in particular for shaping keratin fibres and/or straightening/relaxing, ii) a composition comprising the bisthiolactone(s) of formula (I), iii) novel bisthiolactones of formula (I), iv) a process for preparing the novel bisthiolactones of formula (I), and v) the use of said bisthiolactones in cosmetics. In which formula (I), R1, R2, R3, R4, X, X', Y, Y', A, A', B, a, b, c, and d are as defined in the description.
本发明涉及i) 一种处理角蛋白材料的方法,特别是人类角蛋白纤维,包括应用包含至少一个式(I)的双
硫内酯的组合物,特别是用于造型角蛋白纤维和/或拉直/放松,ii) 包括式(I)的双
硫内酯的组合物,iii) 新型的式(I)的双
硫内酯,iv) 制备新型式(I)的双
硫内酯的方法,以及v) 在化妆品中使用所述双
硫内酯。其中,式(I)中,R1、R2、R3、R4、X、X'、Y、Y'、A、A'、B、a、b、c和d如所述的描述。