abstract |
The invention relates to a compound of formula I n n n n n n n n n n wherein R 1 , R 2 and R 3 are identical or different and each is H or alkyl of 1-6 carbon atoms, R 4 is H or methyl, R 5 is phenyl or chlorophenyl, and/or physiologically acceptable salts thereof and its use in compositions, especially topical, cosmetic and/or personal care compositions, and compositions containing said compound. |