Patent ID: 8722025

Claim:
A cosmetic or dermatological composition comprising a hyaluronic acid compound formed by the repetition of the hydrophilic disaccharide unit, in which sodium D-glucuronate and/or D-glucuronic acid is connected to N-acetylglucosamine via alternating β1-4 and β1-3 glycoside bonds or via β1-4 glycoside bonds alone, which comprises units (Ia) and units (Ib), or one of its salts: in which: R 1 represents OH or an —NH—R′—Z radical, R 2 represents H or a —C(O)—NH—R′—Z radical, with: R′ being a linear or branched, divalent C 1 -C 18 alkyl radical; or a single bond; Z being a radical of formula (I): wherein at least one of the R 1 and R 2 radicals comprises a Z radical.