Question

When "reapplying" sunscreen is it necessary to wait 30 minutes before sun exposure? Or, can I reapply sunscreen while I'm already outside in the sun?

Answer 1

Yes, reapplying sunscreen is necessary before sun exposure and already outside in the sun.

EXPLANATION:- Application of sunscreen:-
The AAD (American academy of dermatology) suggests that sunscreen should apply whenever you expect more than 20 minutes of sun exposure.
-Sunscreen should be applied at least 15 to 30 minutes before going outside and reapplied at least every two hours.
-Reapplying sunscreen more frequently if you are swimming or exercising outdoors.

=> The SPF (sun protection factor) measures how much the sunscreen protects from ultraviolet (UV) rays.
E.g.-the higher the SPF , the more protection.

answered by: anonymous