Method and compositions for retarding chemical damage to hair with treating agents containing two or more polar groups

摘要

The hair is protected from damage by chemical agents, e.g. in bleaching, by either pretreatment with, or concurrent use of a protective agent and the damaging chemical. The protective agents disclosed are organic compounds containing two or more polar groups, e.g. carboxyl groups, which are separated by at least 15 atoms the majority of which are carbon atoms and preferably containing a cyclic moiety of at least 5 atoms, e.g. the dimer of linoleic acid.