8 Vitamin C-Infused Products That Will Actually Improve Your Skin

Speaking of moisturizers, Shiseido's top-selling Ibuki Beauty Sleeping Mask ($40) is an overnight gel cream rich in vitamin C and E that will noticeably improve the clarity and brightness of your skin as you catch your zzz's.

"Using L-ascorbic acid (vitamin C) and tocopherol (vitamin E) is even more powerful than vitamin C alone," Dr. Goldberg said. "They work together for sustained benefits."

In addition to vitamins C and E, the mask contains what the brand calls a "PhytoTarget Complex," which helps the skin retain moisture and defend itself against environmental stressors. It has also been infused with phytoplankton extract, which further adds to that plumped, "definitely got my beauty sleep" visage.