Dermatological use of N-acetylaspartic acids and combinations of N-acetylaspartic acids and at least one of a compound selected from the group consisting of: gibberellic acids, naringenins, β-aescin, arachadonic acid, quercetin, vitexin and docosahexaenoic acid (ethyl ester). Suitably, the use is in the treatment of, and/or prevention of, at least one sign of skin ageing or at least one sign of a skin damage condition associated with ageing, wherein the sign of skin ageing or skin damage is present on skin of the face, body or the scalp of a subject.