4 doctors weighed in:

How often do I need to apply sunscreen?

4 doctors weighed in
Dr. Laura Webb
Pediatrics
2 doctors agree

In brief: Lots!

Put on sunscreen about 20 minutes before heading into the sun.
Then reapply every 2 hours (more often if you get sweaty or wet). Make sure you use a broad spectrum sunscreen that protects against both uva and uvb rays. Also- remember your hat and sunglasses!

In brief: Lots!

Put on sunscreen about 20 minutes before heading into the sun.
Then reapply every 2 hours (more often if you get sweaty or wet). Make sure you use a broad spectrum sunscreen that protects against both uva and uvb rays. Also- remember your hat and sunglasses!
Dr. Laura Webb
Dr. Laura Webb
Thank
1 comment
Dr. Jan Lei Iwata
Most sunscreens last only about 80-88 minutes. So this may require more frequent application if in direct sunlight. Not as important if in shade or using physical barriers like hats, umbrellas or clothing.
Dr. James Ferguson
Pediatrics

In brief: SPF X 10 min + ftr

A simple rule of thumb is spf x 10 min is basic protection (spf15=150min) but there are many variables.
If one is sweating, the material washes off. Some stick better than others, but the term waterproof means you can dunk an arm in the water up to two times & it still works, after three it can be gone & still labled waterproof.

In brief: SPF X 10 min + ftr

A simple rule of thumb is spf x 10 min is basic protection (spf15=150min) but there are many variables.
If one is sweating, the material washes off. Some stick better than others, but the term waterproof means you can dunk an arm in the water up to two times & it still works, after three it can be gone & still labled waterproof.
Dr. James Ferguson
Dr. James Ferguson
Thank
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