Many facial moisturizers brag about their sun protection abilities. But new research shows that user error is stopping SPF-containing moisturizer from providing much of a defense against the sun’s harmful rays.

Researchers found that people miss more of their faces when putting on moisturizer than they do when applying sunscreen. The findings mean we need to pay more attention to better protect against skin cancer. And, when it’s really sunny out, sunscreen might be the better choice.