Patent ID: 7066184

Claim:
A method for the cosmetic treatment of human hair for protection against UV radiation which comprises applying thereto a compound of formula wherein A is a radical of formula B is a radical of formula R 1 , R 2 , R 3 , R 4 , R 5 and R 5 are each independently of the others hydrogen, C 1 –C 16 alkyl; C 5 –C 7 -cycloalkyl; or halogen: R 9 is hydrogen, C 1 –C 12 alkyl; or C 5 –C 7 cycloalkyl: R 7 , R 8 and R 10 are each independently of the others hydrogen, C 1 –C 12 alkyl, C 5 –C 7 cycloalkyl or C 1 –C 12 hydroxyalkyl; X is halogen; a radical of formula sulfate, phosphate, lactate, citrate or tartrate; R 11 is C 1 –C 12 alkyl; or C 6 –C 7 cycloalkyl; R 12 and R 13 are each independently of the other hydrogen; or C 1 –C 5 alkyl; x is from 2 to 10; and y is from 1 to 20.