Their Skin Renewing Vitamin C Serum is made with 10% L-ascorbic acid to help visibly brighten your complexion, as well as hyaluronic acid, vitamin B5, and three essential ceramides to help ...

a serum containing 15% L-ascorbic acid. It’s often referred to as the gold standard in vitamin C serums by dermatologists. “It probably has the most evidence behind it,” says Castilla ...

Its main active ingredient is L-ascorbic acid (it comprises 15 percent of this serum), and despite the high concentration of pure vitamin C, it is stable and easily penetrates the skin.

Finally, ethylated L-ascorbic acid is the ultimate derivative of vitamin ... you can release it into the serum, give it a shake and it’s ready to go.

When consumed in food or drink form, vitamin C can protect your entire body’s cells from damage; when applied topically, research shows it can help prevent signs of aging, hyperpigmentation and ...

The serum is lightweight and absorbs quickly ... What is the most effective form of vitamin C for facial skin care? L-ascorbic acid is the most effective form of vitamin C for facial skin care.