The Real Story on Vitamin D and Sunscreen
Does daily SPF tank your vitamin D? The nuanced answer.
Reviews of real-world studies generally find that typical sunscreen use does not cause vitamin D deficiency, partly because most people apply far less than the tested amount.
Dermatologists note that getting vitamin D from diet or supplements is far safer than deliberately seeking unprotected UV exposure, since there is no 'safe' tanning dose for the skin.
Questions we get a lot
Does wearing sunscreen cause vitamin D deficiency?
In real-world use, generally no. Studies have not found that regular sunscreen use leads to vitamin D deficiency, largely because most people apply less than the tested amount and miss spots. If you're concerned, get vitamin D from diet or a supplement rather than skipping sun protection.
Should I get sun exposure instead of sunscreen to boost vitamin D?
Dermatologists advise against deliberately seeking UV for vitamin D, because the same rays that drive synthesis also cause DNA damage, photoaging and skin cancer. There's no 'safe' tanning dose. Maintain vitamin D through fortified foods, fatty fish, or a supplement, and keep wearing daily sunscreen.
How can I keep my vitamin D up while protecting my skin?
The simplest approach is diet and supplements: fatty fish, fortified dairy or plant milks, eggs, and an over-the-counter vitamin D supplement if your levels are low. Ask your doctor about testing if you have risk factors. This lets you stay sun-safe without trading skin-cancer risk for vitamin D.
r/SkincareAddiction: 'If I wear sunscreen every day, do I need to take a vitamin D supplement?'
