Skip to Main Content

LOS ANGELES — A day in the sun often means slathering on sunscreen to stave off sunburns — but it can be a guessing game as to when SPF coverage is starting to dwindle.

Now, scientists are working to develop a stick-on patch that can tell wearers when they’ve had too much time in the sun.

Unlock this article by subscribing to STAT+ and enjoy your first 30 days free!

GET STARTED