Vitamin C is important for collagen synthesis, keeping your immune system healthy, fighting free radicals in your body and ...

What it costs: Medik8 is a little on the pricier side but certainly far from outrageous. The brand’s products all cost ...

Every item on this page was chosen by an ELLE editor. We may earn commission on some of the items you choose to buy. Almost every skin consultation with a dermatologist or esthetician arrives at ...

What does a vitamin C serum do? 'Vitamin C is a staple for so many skin concerns,' explains facialist Abigail James. 'It's an antioxidant, which means it can protect against free radical damage ...

The idea originally came from Nobel prize-winning chemist Linus Pauling in the 1970s. Pauling reported that there was ‘strong evidence’ that vitamin C decreased the incidence of colds.