Home / Obagi / Obagi Professional C Serum 20% Obagi Professional C Serum 20%$127.00 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. 1fl oz Obagi Professional C Serum 20% quantity Add to cart SKU: O Pro-C 20% Category: Obagi Tags: Serum, Vitamin C Product ID: 4038 Related products View Add to cart ZO® Skin Health 10% Vitamin C Self-Activating $93.00 View Add to cart SkinMedica TNS Essential Serum® $281.00 View Add to cart Obagi Foaming Gel Cleanser $43.00 View Add to cart Obagi Hydrate Facial Moisturizer $52.00