Shereene IdrissBoard Certified Derm, Founder and Chief Nerd

Are you checking the UV Index to tan or to reapply your sunscreen?

9 Jul 2026 · 0 min

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0:08

Dermatologist Shereene Idriss breaks down what the UV Index actually tells you and how to use it. The numbers matter for sunscreen reapplication timing, not for deciding when it's safe to tan. She clears up misconceptions and shows how to check the index as part of your daily routine.

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