Obagi Professional-C Serum 20% Vitamin C Serum Facial Treatment Products
Buy Obagi Intensive Treatments - Obagi Professional-C Serum 20% Vitamin C Serum 30ml/1oz. How-to-Use: Apply 5 to 7 drops to the face, neck and chest using fingertips. Apply to cleansed skin in the morning before sunscreen and makeup application. A slight tingling may occur in some people, which diminishes with continued use.