| 摘要 |
A cosmetic composition for the first stage of an operation for the permanent deformation of hair contains, as a reducing agent, a compound having the formula <IMAGE> (I) wherein, n is 2 or 3; A represents a divalent radical selected from (i) -(CH2)m-, wherein m is 2 or 3, <IMAGE> wherein R3 and R4, each independently, represent alkyl having 1-4 carbon atoms, or R3 and R4 together with the adjacent carbon atoms form a cyclohexane ring, and <IMAGE> wherein R5 and R6, each independently, represent hydrogen, alkyl having 1-4 carbon atoms, or R5 and R6 together with the adjacent carbon atoms form a benzene ring; R1 represents hydrogen; R2 represents hydroxy, or R1 and R2 taken together form a simple bond, and the salts of an organic or mineral base of said compound in free acid form.
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