L-ascorbic acid is the most powerful type of vitamin C and can help brighten skin and prevent signs of aging. Here are the best L-ascorbic acid serums, according to derms and editors.

L-ascorbic acid serums are a great choice for fading discoloration and helping skin glow. Here are the best serums with L-ascorbic acid, according to experts. Search. Join Club Cosmo; ...

Dermatologists weigh in on the best L-ascorbic acid serums for glowing skin. Shop top-rated vitamin C serums from SkinCeuticals, CeraVe, L'Oréal, and more.

Vitamin C, as ascorbic acid or its salts, is essential for human nutrition. It is a cofactor that permits several enzymes to function properly; it plays a role in the immune system; and it is an ...