4,4-diarylbutadienes as water-soluble photostable UV filters for cosmetic and pharmaceutical preparations

摘要

Use of 4,4-diarylbutadienes of the formula I, where the variables have the meanings explained in the description, as water-soluble photostable UV filters in cosmetic and pharmaceutical preparations for protecting the human skin or human hair from the sun's rays, alone or together with compounds which absorb in the UV region and are known per se for cosmetic and pharmaceutical preparations.