Discover the powerful effects of Multi-Vitamin Antioxidants Potent PM Serum. Made in the USA, this serum is packed with 31% skin-friendly vitamins that work together to reduce fine lines, increase firmness and elasticity, and even out skin tone. Our unique formula includes the anti-aging superstars Niacinamide and Vitamin C, which are typically not combined due to their different pH levels. But with our use of Magnesium Ascorbyl Phosphate, the highest quality and most stable form of Vitamin C, and a pH balance of 6, these two vitamins work in perfect harmony to give you a radiant, youthful complexion.