How Often Should I Reapply Sunscreen If I Am Outdoors All Day?

Read Transcript

We really should reapply sunscreen every hour. The truth is sunscreen they get used up, just like gasoline gets used up in a car. So if you're outside, and light hits your sunscreen, that sunscreen captures that light and dissipates it into heat. The more light that sunscreen captures the more used up that sunscreen becomes.

So the rule of thumb is bring your sunscreen with you, have it handy and reapply it every 1-2 hours.