| abstract |
Disclosed is the use of benzylidene malonates of formula (1), wherein R 1 is methyl; ethyl; propyl; or n-butyl; if R 1 is methyl, then R is tert. butyl; formula (A); a radical of formula (1a); or a radical of formula (1b); wherein R 2 and R 3 , independently from each other are hydrogen; or methyl; R 4 is methyl; ethyl; or n-propyl; R 5 and R 6 independently from each other are hydrogen; or C 1 -C 3 alkyl; if R 1 is ethyl; propyl; or n-butyl, then R is isopropyl; for the protection of human and animal hair and skin against UV radiation. |