Cosmetic use of an extract of at least one bacterium of the species Staphylococcus epidermidis to prevent the decrease in and / or strengthen the skin barrier function

Abstract

Cosmetic use of an extract of at least one bacterium of the species Staphylococcus epidermidis to prevent the decrease of and / or strengthen the skin barrier function. The present invention relates to the non-therapeutic cosmetic use of an extract of at least one bacterium of the species Staphylococcus epidermidis, which can be obtained by at least one step of culturing at least one bacterium of the species Staphylococcus epidermidis, in the presence of a culture medium comprising i) at least one sugar, ii) at least one peptone of vegetable origin and / or at least one yeast extract, and optionally iii) at least one microelement, to prevent the decrease of and / or strengthen the skin barrier function, and / or to prevent and / or treat dry skin and / or to prevent and / or treat the cosmetic signs associated with dry skin and / or to promote skin hydration.The present invention also relates to the non-therapeutic cosmetic use of a biomass extract of at least one bacterial strain of the species Staphylococcus epidermidis chosen from the group of bacteria deposited at the CNCM under order numbers I-5688, I-5689, I-5904, I-5691, I-5692, I-5693, I-5694 and I-5695, to prevent the decrease of and / or strengthen the skin barrier function, and / or to prevent and / or treat dry skin and / or to prevent and / or treat the cosmetic signs associated with dry skin and / or to promote skin hydration, as well as a cosmetic skin treatment process implementing said extract within a composition.