| 摘要 |
The invention relates to the use of a combination of active ingredients consisting of (A) alkoxylated wool wax alcohols and (B) a pyrrolidone carboxylic acid and/or pyrrolidone carboxylic acid derivative corresponding to general formula (I) (I) <IMG> in which at least one of the substituents R1 to R3 is a group -COOR4, where R4 is hydrogen, an alkali metal ion, an alkaline earth metal ion or an ammonium ion +NHR5R6R7, where R5 to R7 independently of one another represent hydrogen, C1-22 alkyl groups, C1-4 hydroxyalkyl groups, C2-22 alkenyl groups, C2-22 acyl groups or optionally substituted C6-10 aromatic groups, and the remaining substituents R1 to R3 are hydrogen or C1-4 alkyl groups, in aqueous preparations for the washing and care of hair. In the case of colored hair, a strong levelling effect can thus be obtained with surprisingly little change in color.
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