Preservatives pontenciar agents in sunscreen formulations.

chemical composition containing at least one C 5-20 alkanediol wherein the hydroxy groups are replaced contiguously and in which a hydroxyl group is substituted on a terminal carbon and the other on the carbon next to that and / or at least one 1, 2- octanediol substituted with 1, 2 or 3 groups or C1-4 mixtures thereof alkyl, and a combination of phenoxyethanol and iodopropynyl butylcarbamate.