Disclosed is the use of the compounds (A) corresponding to formula (1) wherein R1 represents C6-C24alkyl R2 is hydrogen or d-C4alkyl R3 is a radical of formula (1 a) *-(CH2)n1-R4 R4 is a heterocyclic or aromatic radical comprising 4 to 6 carbon atoms which can contain from 1 to 3 nitrogen and/or oxygen atoms n-1 is a number from 0 to 5 or R2 and R3 together with the linking nitrogen atom form a heterocyclic radical comprising 4 to 6 carbon atoms which can contain one or more oxygen or nitrogen atoms as solubilizing agent for organic UV filters (B) selected from (B1 ) benzophenone derivatives, (B2) hydroxyphenyl triazine derivatives and (B3) trianilino-s-triazine derivatives.