Cosmetic compositions comprising calcium citrate and at least one N-acylated aminoalcohol according to formula (I). Provided is a method of treating aged skin, comprising topically applying to the aged skin a composition comprising a compound of Formula (I) in an amount effective to provide an anti-ageing effect. The compound of Formula (I) is used to prevent skin and/or to help to maintain or improve moisture retention and/or to fight against the signs of skin ageing. The N-acylated aminoalcohol of formula (I) acts as a ceramidase inhibitor. The combination of at least one compound of formula (I) and calcium citrate stimulates keratinocyte differentiation.