14 Vitamin C Serums For Your Brightest Skin Ever

Obagi Professional-C Serum 20% ($142)

With 20 percent pure l-ascorbic acid, the Obagi Professional-C Serum 20% is a powerful antioxidant serum that's ideal for those dealing with more stubborn anti-aging or hyperpigmentation concerns. Around five drops every morning of this serum can help brighten and even out your skin tone, while providing effective antioxidant protection, especially when paired with a quality sunscreen. Since it has a higher concentration of pure l-ascorbic acid, this may be irritating to those with sensitive skin. However, the fast-absorbing serum is cushioned with hyaluronic acid, making it hydrating, too.