Cosmetic use of a hydroxylated amide compound (I) and its salts, isomers and solvates as a skin moisturizer. Cosmetic use of a hydroxylated amide compound (I) of formula R 4-O-CH 2-CH(OR 3>；)-CH(OR 3>；)-C(O)-NR 2>；R 1>；and its salts, isomers and solvates as a skin moisturizer. Either R 1>；, R 2>；H, 1-6C, preferably 3-6C alkyl (optionally substituted by -OR 5>；-, -SiMe 3, -CO 2R 6or -F)； NR 1>；R 2>；5-7 membered hetero cycle (optionally containing another hetero atom such as S or O), e.g. pyrrolidine, piperidine, morpholine, thiomorpholine or cyclohexamethyleneimine (or homopiperidine), preferably pyrrolidine (optionally substituted by 1-3 groups (preferably 1 group) of 1-4C linear or 3-4C branched alkyl (optionally substituted by OH))； R 5>；H or 1-3C linear, 3C branched or 2-3C unsaturated alkyl； R 6>；H or 1-4C linear or 3-4C branched alkyl； either R 3>；H or 1-6C alkyl； or 2R 3>；isopropylidene； and either R 4>；H or； OR 3>；, OR 4>；phosphate group. Independent claims are included for: (1) a composition comprising (I) and oils, waxes, thickening agents, polymer film, preservatives, perfumes, fillers, UV filters, microbicides, odor absorbers, dyestuffs, cosmetic active agents, plant extracts, antioxidants or surfactants； (2) method of non-therapeutic treatment and/or makeup of skin, comprising application of the composition on the skin； and (3) hydroxylated amide compound (I). ACTIVITY : Dermatological. MECHANISM OF ACTION : None given.
