pHaze 15+ C-Quench® Antioxidant Serum (for full face treatment) With 15% of L-ascorbic acid to plumps skin and brightens skin tone and also for anti-aging needs, this stable formula also contains hyaluronic acid and grapefruit extract (for better absorption of vit.C). Contains hyaluronic acid, glutathione and resveratrol. Preservative free. pHaze 16+ C-Strength 20% with 5% Vitamin E (for localized treatment) Serves the same function as above. This is a more potent, stabilized (with encapsulation) formula that works effectively on lines and wrinkles. Constrains retinyl palmitate (vitamin A), vitamin E and sandalwood extract. Preservative free.