$29.99. TruSkin Naturals Vitamin C Serum Overview. This CeraVe’s Serum contains 10 percent pure Vitamin C to brighten skin and provides a protective barrier from the elements. The serum boosts radiance and shine while creating long-term changes to the way your skin looks and feels. Sneaky sneaky. Premium pick: TruSkin Vitamin C Serum for Face, Topical Facial Serum 9.45/10 2. TruSkin Naturals Vitamin C Serum is an anti-aging skin care formula, which is designed to help reduce the visibility of fine lines, wrinkles and age spots. For one, this serum isn’t for everyone. It contains polysorbate 80, which feeds malassezia. This skin refiner delivers 20% pure vitamin C, the highest percentage available OTC, in the brand's unique encapsulation system that prevents the serum from breaking down and losing its efficacy. It also claims to increase the skin firmness, fade away sun damages and increase collagen production. Consumers say it does it all—it brightens, reduces fine lines, treats dark spots on your face, and leaves skin soft and supple. Amazon. However, it’s not without its share of caveats. $19.99 (33% off) SHOP NOW. When it comes to vitamin C serum, this "Amazon Choice" product is an all-time favorite, with four stars and nearly 8,000 glowing reviews. But if that customer stamp of approval isn’t enough to convince you, consider the fact that the serum is over 30 percent off for Cyber Monday. And with nearly 30,000 five-star ratings on Amazon, the TruSkin Vitamin C Serum is the perfect product to add to your skincare routine. But if that customer stamp of approval isn’t enough to convince you, consider the fact that the serum is over 30 percent off for Cyber Monday. Timeless has a pH of 2.4. With 15% pure vitamin C, hyaluronic acid, and jasmonate deritives, Lancôme's vitamin C serum will help even your skin tone and protect the skin barrier from free radicals with continued use. And with nearly 30,000 five-star ratings on Amazon, the TruSkin Vitamin C Serum is the perfect product to add to your skincare routine. The patent specifies a vitamin C serum with 5% to 20% L-ascorbic acid, 0.5% to 5.0% ferulic acid, and 0.5% to 2.0% vitamin E with a pH range between 2.5 -3.5. 4 of 21. TruSkin Naturals amazon.com. Best Budget Pick.