Obagi Professional-C Serum is a concentrated formula available in 3 strengths including 10%, 15%, and 20% L-ascorbic acid (Vitamin C).

10% strength is gentle enough for dry, irritated, or sensitive skin. Helps minimize the appearance of fine lines and wrinkles.

15% is suitable for most skin types. Helps minimize the appearance of fine lines and wrinkles.

20% is the highest concentrated serum with 20% L-ascorbic acid (Vitamin C), best suited for normal to oily skin. Helps minimize the appearance of fine lines and wrinkles.