PHOTOSTABLE COSMETIC COMPOSITIONS

摘要

Photostable cosmetic compositions comprising sunscreens, more particularl y to cosmetic compositions comprising dibenzoylmethane sunscreens are provid ed. It is known that dibenzoylmethane and its derivatives are relatively sen sitive to ultraviolet radiation and they decompose rapidly under the effect of sunlight. This decomposition is accelerated in the presence of UV-B sunsc reens, especially p-methoxycinnamic acid and its derivatives. The present in ventors have surprisingly found that cosmetic compositions comprising dibenz oylmethane or its derivative and p-methoxycinnamic acid or its derivative, c an be stabilized by incorporating a combination of fatty alcohol ethoxylates and polyalkyleneglycol.