Obagi Professional-C Serum 20% Vitamin C is the serum with the highest concentration of Vitamin C, containing 20% L-ascorbic acid, suitable for normal to oily skin. It helps reduce the appearance of fine lines and wrinkles.
It is recommended to use 5-7 drops every morning, applying them evenly on freshly cleansed and toned skin.
Key Ingredient: 20% L-ascorbic acid
Daily Use of Vitamin C: