Cosmetic use of bifidobacterium species lysate for the treatment of dryness

Abstract

Cosmetic use of an effective amount of a lysate of at least one microorganism of the genus Bifidobacterium species and/or one of its fractions in treating and/or preventing dryness and/or associated disorders of a keratinous substance.

1 . A cosmetic and/or dermatological composition for preventing and/or treating dry keratinous substances, comprising, in a physiologically acceptable medium, at least an effective amount of a lysate of at least one microorganism of the genus  Bifidobacterium  in combination with at least an effective amount of at least one additional microorganism, and/or one of its fractions and/or one of its metabolites, distinct from the said lysate. 
     
     
         2 . The composition according to  claim 1 , in which the microorganism of the genus  Bifidobacterium  is selected from the group consisting of  Bifidobacterium longum, Bifidobacterium bifidum, Bifidobacterium breve, Bifidobacterium animalis, Bifidobacterium lactis, Bifidobacterium infantis, Bifidobacterium adolescentis, Bifidobacterium pseudocatenulatum,  and mixtures thereof. 
     
     
         3 . The composition according to  claim 1 , in which the said lysate is at least 0.0001% by weight (expressed as dry weight) of the total weight of the said composition. 
     
     
         4 . The composition according to  claim 1 , in which the said additional microorganism is selected from the group consisting of Ascomycetes,  Bifidobacterium, Bacteroides, Fusobacterium, Melissococcus, Propionibacterium, Enterococcus, Lactococcus, Staphylococcus, Peptostreptococcus, Bacillus, Pediococcus, Micrococcus, Leuconostoc, Weissella, Aerococcus, Oenococcus, Lactobacillus,  and mixtures thereof. 
     
     
         5 . The composition according to  claim 1 , in which the additional microorganism is a lactic bacteria. 
     
     
         6 . The composition according to  claim 1 , in which the additional microorganism is  Lactobacillus johnsonii  (CNCM 1-1225). 
     
     
         7 . The composition according to  claim 1 , in which the additional microorganism and/or one of its fractions and/or one of its metabolites is present in a proportion of 0.1 to 10% by weight of the said composition. 
     
     
         8 . The composition according to  claim 1 , in which it is provided in the form of aqueous, aqueous/alcoholic or oily solutions, of dispersions of the type of solutions or dispersions of the lotion or serum type, of emulsions of the liquid or semiliquid consistency of the milk type, obtained by dispersion of a fatty phase in an aqueous phase (O/W) or vice versa (W/O), or of suspensions or emulsions with a soft, semisolid or solid consistency of the cream type, of aqueous or anhydrous gels, or also of microemulsions, of microcapsules, of microparticles or of vesicular dispersions of anionic and/or nonionic type. 
     
     
         9 . A cosmetic and/or dermatological composition, of use in particular for preventing and/or treating dry keratinous substances, comprising, in a physiologically acceptable medium, at least an effective amount of a lysate of at least one microorganism of the genus  Bifidobacterium  in combination with at least an effective amount of at least one moisturizing active principle. 
     
     
         10 . A method of preparing a composition for treating and/or preventing dryness or associated disorders of a keratinous substance comprising combining a lysate of at least one microorganism of the genus  Bifidobacterium  and/or one of its fractions with a physiologically acceptable medium. 
     
     
         11 . The method according to  claim 10 , wherein the composition is for treating and/or preventing a dry dandruff state of the scalp.