Abstract: The disclosed technology relates to a method of decreasing or preventing signs of ageing of décolleté skin and optionally the face and/or neck skin comprising topically applying to the skin a composition comprising a cosmetically acceptable medium, a vitamin C, or derivative thereof, and compound having two or more hydroxyl groups, wherein the compound has a molar mass of at least 150 g/mol and increases transglutaminase K expression in epidermal keratinocytes.