Serums & Oils Brighten & Renew 25% L-Ascorbic Acid, Vitamin C Clean Science Professional Results Vegan Cruelty-Free Non Irritating Dermatologist and Allergy Tested Certified Gluten-Free Non-GMO Professional-level Vitamin C formula provides accelerated brightening and antioxidant/anti-pollution benefits. Formulated with the highest, active level of stable 25% L-Ascorbic Acid to address the improvement of skin texture and visible signs of aging.