How Often to Reapply Sunscreen with Makeup On

Episode #228 / Aug 15, 2010
By now you know that it's imperative to reapply sunscreen after any activity that causes you to sweat or every three to four hours to ensure optimal protection from your sunscreen. You also know to apply sunscreen first. But what happens when you have makeup on? In this episode of DermTV, Dr. Schultz explains how often to reapply sunscreen when you have makeup on.