The invention relates to a foaming
cleanser cosmetic composition containing, in a physiologically acceptable medium: - a
surfactant system comprising (i) at least one N-(C6-C30)acyl-amino based surfactant, and (ii) at least one amphoteric surfactant chosen from betaines or (C8- C20)
alkyl betaines, (C8-C20)alkylamido(Cl-C6)aIkylbetaines, and mixtures thereof; and - at least one non associative crosslinked
copolymer or
acrylic acid and / or
methacrylic acid, and optionally of (Cl-C4)
alkyl esters thereof, wherein said N-(C6-C30)acyl-amino based surfactant being present in the
surfactant system in a major weight amount, and the
surfactant system being present in the composition in an amount of less than 15% by weight relative to the total weight of the composition. The invention also relates to a process for cleansing
keratin materials, which consists in applying the said composition to the said
keratin materials, in working it into a foam and then in rinsing off the said composition, as well as the cosmetic use of the composition as defined above, for removing makeup and / or cleansing the
skin, the hair and / or mucous membranes, or for skincare.