Peter Thomas Roth POTENT C Brightening Vitamin C Moisturizer - A supercharged moisturizer with 10% THD Ascorbate Vitamin C that provides clinically proven anti-aging and brightening results. Benefits Potent brightening and anti-aging treatment with 10% THD Ascorbate, an advanced form of Vitamin C Boosted performance with 3% Vitamin E and Ferulic Acid Supercharged with an Antioxidant Superfood Complex Visibly helps reduce the look of dullness, uneven tone and dark spots 24-hour hydration with Trimoist KMF Key Ingredients 10% THD Ascorbate Vitamin C - Advanced form of Vitamin C that helps brighten skin's appearance and defy signs of aging 3% Vitamin E and Ferulic Acid - Help boost performance of Vitamin C while providing potent antioxidant benefits Antioxidant Superfood Complex - Scientifically engineered complex of kale sprouts and olives that combats the aging effects of environmental stress to help maintain and enhance brightening results Research Results Clinically proven to improve the appearance of fine lines, wrinkles and skin tone, based on a 4-week clinically measured study on 30 women, ranging in age from 36 to 65 Apply twice daily to face and neck with continued use. Precautions: For external use only. Note: Due to the high potency of active ingredients, color may shift over time. This will not affect product performance.