Best Vitamin C Serum for Sensitive Skin That Will Not Sting
The best vitamin C serum for sensitive skin sits at 10 percent L-ascorbic acid, not 20. See what the pH really does and which gentle forms fall short.
L-ascorbic acid
The Best Vitamin C Serum for Glowing Skin, According to the Ingredient List
The best vitamin c serum for glowing skin is decided on the label: 10 to 20 percent L-ascorbic acid, pH under 3.5, with vitamin E and ferulic acid. Read it.