Other countries have better sunscreens. Here's why we can't get them in the U.S.

In Europe, sunscreens are often made with ingredients that do a better job at protecting against UVA rays. (Iana Kunitsa/Getty Images)

When dermatologist Adewole "Ade" Adamson sees people spritzing sunscreen as if it's cologne at the pool where he lives in Austin, Texas, he wants to intervene. "My wife says I shouldn't," he said, "even though most people rarely use enough sunscreen."

At issue is not just whether people are using enough sunscreen, but what ingredients are in it.