Potent, stabilized vitamins in this PM serum work synergistically to reduce lines and wrinkles, increase firmness and elasticity, brighten and even skin tone. Potent, stabilized vitamins work synergistically to lessen appearance of fine lines and wrinkles, increase firmness and elasticity, and brighten and even skin tone. Niacinamide and Vitamin C are two anti-aging superstars but not usually formulated together because of their different pH levels. However, we formulated with Magnesium Ascorbyl Phosphate: the highest quality, most stable form of Vitamin C, which has a pH balance of 6 — the same as Niacinamide. This allows the two vitamins to work harmoniously to restore a youthful, glowing complexion.