- 20% Vitamin C serum - Defy 7 signs of ageing in 7 days - Added antioxidant and hydration benefitsPeter Thomas Roth Potent-C Power Serum DEFY 7 SIGNS OF AGEING IN 7 DAYS The future of Vitamin C has arrived. Potent-C™ Power Serum unleashes the strength of THD ascorbate, an ultra-stable scientific breakthrough ingredient 50 X more powerful than traditional Vitamin C. Packed with a jaw-dropping concentration of 20% Vitamin C, the serum’s efficacy is amplified by the addition of two ultra-powerful antioxidants (3% Vitamin E and 2% Ferulic Acid), delivering a complete and advanced anti-aging, firming and brightening treatment. This rich moisturizing serum is a must to help improve the look of fine lines, wrinkles, firmness, uneven skin tone, texture and brightness. Fragrance-free and non-irritating. Key Ingredients: 20% THD Ascorbate – ultra-potent, gold standard Vitamin C that helps improve the look of uneven skin tone and texture, firmness, and fine lines and wrinkles. 50X more potent than traditional Vitamin C (Ascorbic Acid). *THD Ascorbate delivers Vitamin C benefits up to 50X more effectively than Ascorbic Acid.3% Vitamin E – provides antioxidant benefits. 2% Ferulic Acid – an antioxidant that works synergistically with Vitamins C and E to enhance their benefits. Hyaluronic Acid – helps improve hydration by attracting and retaining up to 1,000 times its weight in water from moisture in the air. Directions: Apply 1-2 pumps to clean, dry skin. For best results, use twice daily on the face, neck, and back of hands. For external use only. Size: 30ml Clinical study: Helps improve the look of fine lines, wrinkles, firmness, uneven skin tone, texture, brightness, and dehydration in 7 days.**Based on a 28-day consumer perception study with 35 female subjects.