What is the Best Form of Vitamin C in Skin Care?

Vitamin C serums have become the Little Black Dress of skincare: It seems like everyone has one, they flatter just about every skin tone, and they just plain work. That said, some vitamin C serums work better than others. Sometimes this is due to the concentration of vitamin C in the serum, but with most … Continue reading What is the Best Form of Vitamin C in Skin Care?