While this is good advice for families who visit the beach only a handful of times each year, it could be the opposite for folks who use sunscreen every day. Why? Because according to a recently-released report by the Food and Drug Administration (FDA), the UV-blocking chemicals soak all the way into your bloodstream.

Believe it or not, a safety testing on the active ingredients in sunscreen has never-before been conducted. This is because the chemicals were approved decades ago, before anyone thought they could be absorbed into the body. For this reason, the FDA led a small clinical trial on over-the-counter sunscreens.

The purpose was to test how the most common sun-filtering molecules behave after being sprayed on and rubbed in. The results were published in the journal JAMA. As it turns out, the UV-blocking chemicals seep directly into the bloodstream. This is contrary to what sunscreen manufacturers have been saying.