Is it true that … vitamin C serums provide added sun protection?

This antioxidant may enhance the protection sunscreens provide, but it is no substitute for them

Sunscreen does two important jobs. It is largely used for its UVB protection benefits – blocking the rays that cause sunburn and are a major contributor to the development of skin cancer. But it also blocks UVA radiation, filtering out the rays that lead to signs of ageing.

Vitamin C does neither of these things, says Rosalind Simpson, a professor of dermatology at the University of Nottingham. That said, it is thought to help prevent sun damage in a different way.