BRAND NEW Obagi Medical Professional-C Serum. 15% Vitamin C. 1 oz Happy to upload pics upon request. Guaranteed authentic. Comes from smoke free and pet free home. Description: Professional C® Serum 15% is formulated with 15% L-Ascorbic Acid to help brighten and even skin tone, strengthen skin's antioxidant defenses, and improve the appearance of fine lines and wrinkles. For a supercharged glow and more youthful-looking skin. Ideal for normal to combination skin types. -Formulated with L-Ascorbic Acid to brighten skin -Helps to neutralize free radicals -For a more even-looking complexion