Cosmetic use of a stable microbial population (I) comprising at least one bacterium and at least one yeast organized within the population by a nonuniform distribution, to prevent and/or treat fragile and/or damaged lips, is claimed. Independent claims are included for: (1) the microbial population (I) comprising at least one bacterium and at least one yeast organized within the population by a nonuniform distribution, for the treatment of painful lips, irritated and/or cracked and/or with one or more signs of inflammation； and (2) a composition comprising (I) in a medium. ACTIVITY : Dermatological. MECHANISM OF ACTION : None given.
