Among ingredient MVPS,

vitamin C tops the list. The powerful antioxidant helps protect against free-radical damage – responsible for weakening the skin barrier – and is a salve for most skin woes. ‘It’s essential for collagen production, which gives your skin support and structure to combat fine lines and wrinkles,’ says Dr Libby, who suggests pairing it with another antioxidant powerhouse, vitamin E. Vitamin E also minimises the damaging effects of free radicals by donating a hydrogen atom, which renders the free radical harmless. And when formulated together, they make each other more potent: vitamin E makes vitamin C four times stronger. In addition, they tag team to increase the power of your SPF and limit UV ray-induced damage. Do yourself a favour and go for a product that already combines the two ingredients, like cult favourite Skinceuticals

C E Ferulic (£145). Simply layer it on in the morning before applying your SPF.