A composition which is adapted for oral consumption and which comprises: (i) a PPAR ligand; such as EPA or DHA (ii) an oestrogen receptor binding agent; such as soy isoflavones (iii) an agent that is involved in the post-translational modification of collagen; such as ascorbic acid and (iv) a carotenoid, wherein the composition is substantially free from added zinc and/or selenium, can provide an anti-ageing effect on skin and may be used to increase collagen synthesis in skin.