Patent ID: 6017556
Filing Date: 2000-01-25
Classification: A61K,A61Q,B82Y,C07D,Y10S

Abstract:
A method of protecting human hair from the damaging effect of UV radiation by treating human hair with a liposomogenic UV absorber comprising a hydrophilic head group (=Z), a spacer (=W), a UV chromophore (Q) having an absorption in the range from 285 to 400 nm and at least one hydrophobic tail group (=A), which has the formula ##STR47## in which A.sub.1 and A.sub.2 independently of one another are a hydrophobic radical;Q is a UV chromophore;W is an organic radical;Z.sub.1 and Z.sub.2 independently of one another are a hydrophilic radical;n.sub.1 and n.sub.2 independently of one another are a number from 0 to 4, where n.sub.1 =n.sub.2 =0 is not included;p is 1 or 2;q is a number from 0 to 3;r.sub.1 is 1 or 2;r.sub.2 is 0 or 1; ands.sub.1 is a number from 1 to 3.