Transforming Vitamin C Obagi Professional-C Serum provides superior antioxidant protection with deep penetration to the dermal layer. The high concentration 15% L-ascorbic acid helps in defending against damaging UVA and UVB rays, helps prevent premature signs of aging such as fine lines and wrinkles, and contributes to collagen synthesis. Obagi Professional-C Serum 15% is suitable for all skin types. BENEFITS Vitamin C neutralizes free radicals to prevent skin cell damage. Pro (more…)