Anti-ageing serums are three to four times more concentrated than anti-ageing creams - perfect for mature skin. Nothing beats them when it comes to zapping wrinkles, plumping up skin, moisturising and reducing pigment spots. Global action anti-ageing serums should be applied before your day/night cream for an instant pick-me-up. Containing active ingredients such as hyaluronic acid, retinol, antioxidants and peptides, they're an age-defying double whammy that also boosts skin cell renewal.