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Journal of Investigative Dermatology


Eating More Vitamin C Can Physically Change Your Skin

by Shari Barbanel | January 7, 2026

Scientists at the University of Otago (New Zealand), Faculty of Medicine—Christchurch Ōtautahi, have identified a direct connection between how much vitamin C people eat and how well their skin produces collagen and renews itself. The findings show that skin health responds measurably to dietary vitamin C, not just topical treatments. Published in the Journal of Investigative ...

Vitamin C Flips the Skin’s “Youth Genes,” Reversing Age-related Thinning, Study Says

by Shari Barbanel | June 30, 2025

The skin acts as the body’s first line of defense against external threats. However, as we age, the epidermis—the outermost layer of skin—gradually becomes thinner and loses its protective strength. About 90 percent of the cells in this layer are keratinocytes, which originate from deeper layers of the epidermis and migrate upward, ultimately forming the ...

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