This serum contains a high concentration of Vitamin C to support skin health and whitening. - Brand: Obagi - Product Name: Vitamin C Serum - Volume: 12mL - Concentration: 25% - Type: Serum - Features: High concentration of Vitamin C - Uses: Skin health and whitening - How to use: Recommended for use morning and night Thank you for viewing. This product is new, unused, and unopened. A small discount will be offered for bulk purchases. Please comment before purchasing. Those with negative feedback in the past, please refrain from purchasing to avoid trouble. Also, please note that transactions will be canceled even if a purchase is made. Thank you for your understanding.