If you use sunscreen lotion instead of a spray, more of the active chemicals get into your bloodstream—so lotions might leave more oxybenzone and avobenzone in your body than sprays do.

When people use sunscreen heavily, oxybenzone—a common ingredient—gets into the bloodstream more than other sunscreen chemicals, reaching levels more than 500 times higher than what the FDA considers worth checking for safety.

When people use sunscreen heavily—covering most of their skin and reapplying it four times a day for four days—chemicals in the sunscreen get into their bloodstream at levels higher than what the FDA says should trigger safety checks.

When people use sunscreen heavily, tiny amounts of its chemicals—avobenzone and oxybenzone—can get into their blood, and scientists can measure these tiny amounts, though they’re way too small to see or feel.

When you put on sunscreen with chemicals like oxybenzone or avobenzone, your body absorbs more of those chemicals into your bloodstream than the FDA thinks is safe — even if you just use it normally on your skin.

When you slather on sunscreen with certain chemicals like oxybenzone or avobenzone really thickly over most of your body, your body absorbs a tiny bit of those chemicals into your bloodstream—so much that it crosses a safety alert level set by the FDA, which says, 'Hey, we need to study this more.'