Are DIY Sunscreens Dangerous?

Interest in homemade sunscreens is hot, but many of these do-it-yourself brews lack effective sun protection, a new study warns.

Researchers found that only about one-third of homemade sunscreens on the popular information-sharing website Pinterest specified how much sun protection factor (SPF) each “natural” sunblock contained. In some cases, SPF content dipped as low as 2 — far below recommended guidelines for preventing premature aging and skin cancer.

Overall, about seven out of 10 sunscreen recipes failed to adequately protect skin from dangerous ultraviolet (UV) rays, the study authors found.

“It is a great sign that consumers are paying attention to what is in their products,” said study author Julie Merten. She is an associate