You may be used to popping Vitamin C as a supplement to fight an oncoming cold, but it's also being hyped as a wonder ingredient in skincare.
Vitamin C is renowned for protecting skin from UVA and UVB damage and for improving the appearance of sun-damaged skin by reducing hyperpigmentation. Vitamin C is also anti-ageing as it boosts the body's production of collagen to fight wrinkles and firm-up skin.
Finally, the wonder ingredient reduces inflammation and brightens skin. Dermatologist Dr Gach says "Vitamin C peels the superficial layers of the epidermis giving a fresher and brighter look to the skin as well as strengthens the collagen fibers." And if you need any more convincing, Adriana Lima, Halle Berry and Suki Waterhouse are fans.