Composition comprising a dibenzoylmethane screening agent and a merocyanine dicyano or cyanoacetate derivative; method for the photostabilization of the dibenzoylmethane screening agent

Abstract

The present invention relates to a cosmetic composition comprising the combination i) of at least one screening agent of the dibenzoylmethane derivative type and ii) of at least one specific merocyanine dicyano or cyanoacetate derivative. It also relates to a method for the photostabilization, with regard to radiation, of at least one screening agent of the dibenzoylmethane derivative type by an effective amount of at least one specific merocyanine dicyano or cyanoacetate derivative.

1 . A compound corresponding to the following formula (VI): 
       
         
           
           
               
               
           
         
         wherein R 3  denotes a linear or branched C 1 -C 8  alkyl radical, and n is 1 or 2, and their E,E-, E,Z- or Z,Z-isomeric forms. 
       
     
     
         2 . The compound according to  claim 1 , chosen from those of the following formulae and their E,E-, E,Z- or Z,Z-isomeric forms: 
       
         
           
           
               
               
           
         
       
     
     
         3 . A compound chosen from the following compounds and their E,E-, E,Z- or Z,Z-isomeric forms: