Obagi Professional-C Serum 10%Apply Obagi Professional C Serum 10% for radiant skin. Vitamin C is a superhero ingredient for the skin with multiple benefits, especially for mature or damaged skin types. Obagi Professional C Serum 10 uses this powerful ingredient to reveal healthier and brighter skin. Vitamin C promotes collagen production to smooth the appearance of fine lines and wrinkles. The ingredient also brightens skin and promotes a more even tone. This serum defends the