Solubilizing agents for uv filters in cosmetic formulations

A solubilizing agent for an organic UV filter corresponding to formula (1)

• wherein
• R1 is hydrogen;
• or a linear or branched C1-C30 aliphatic hydrocarbon residue comprising 0, 1, 2 or 3 double bonds;
• R2 independently from each other are hydrogen;
• methyl;
• ethyl;
• —OH;
• —COOR4;
• —CH2—OH;
• or —CH2—COOR4;
• R4 is hydrogen;
• or a linear or branched C1-C30 aliphatic hydrocarbon residue comprising 0, 1, 2 or 3 double bonds;
• R3 independently from each other are hydrogen;
• methyl;
• ethyl;
• —OH;
• —COOR5;
• —CH2—OH;
• or —CH2—COOR5;
• R5 is hydrogen;
• or a linear or branched C1-C30 aliphatic hydrocarbon residue comprising 0, 1, 2 or 3 double bonds;
• n is at least 0.1 on average;
• m1 and m2 independently from each other are 0 or 1;
• with the proviso, that at least one of the radicals R1, R4 or R5 represent a linear or branched C1-C30 aliphatic hydrocarbon residue comprising 0, 1, 2 or 3 double bonds,
• wherein the organic UV filter is selected from the group consisting of
• (B1) benzophenone derivatives;
• (B2) hydroxyphenyl triazine derivatives;
• (B3) trianilino-s-triazine derivatives;
• and mixtures thereof.

A cosmetic composition comprising

• (A) a compound of formula
• wherein
• R1 is hydrogen;
• or a linear or branched C1-C30 aliphatic hydrocarbon residue comprising 0, 1, 2 or 3 double bonds;
• R2 independently from each other are hydrogen;
• methyl;
• ethyl, —OH;
• —COOR4;
• —CH2—OH;
• or —CH2—COOR4;
• R4 is hydrogen;
• or a linear or branched C1-C30 aliphatic hydrocarbon residue comprising 0, 1, 2 or 3 double bonds;
• R3 independently from each other are hydrogen;
• methyl;
• ethyl;
• —OH;
• —COOR5;
• —CH2—OH;
• or —CH2—COOR5;
• R5 is hydrogen;
• or a linear or branched C1-C30 aliphatic hydrocarbon residue comprising 0, 1, 2 or 3 double bonds;
• n is at least 0.1;
• m1 and m2 independently from each other are 0 or 1;
• with the proviso, that at least one of the radicals R1, R4 or R5 are a linear or branched C1-C30 aliphatic hydrocarbon residue comprising 0, 1, 2 or 3 double bonds;
• and
• (B) an organic UV filter selected from the group consisting of
• (B1) benzophenone derivatives,
• (B2) hydroxyphenyl triazine derivatives;
• (B3) trianilino-s-triazine derivatives, and mixtures thereof.