Obagi Medical Skincare Products › Obagi Medical Professional-C Serum 20% Image 1 of 1 Obagi Medical Professional-C Serum 20% €200.00 10% L-Ascorbic Acid serum to province antioxidant protection from UV exposure, brighten a dull complexion and promote collagen production. Add To Cart Added! 10% L-Ascorbic Acid serum to province antioxidant protection from UV exposure, brighten a dull complexion and promote collagen production. You Might Also Like Obagi Medical Professional-C Serum 15% €165.00 Obagi Medical Professional-C Serum 10% €135.00 Obagi Medical Vitamin C-Cleansing Gel €70.00