But an ingredient in sunscreen could be more dangerous than the sun itself.

Inside almost every bottle of sunscreen is a controversial chemical called Oxybenzone.

An Arizona chemist says when the Oxybenzone is activated by the sun, it can change the way hormones work in our bodies.

According to Dr. Kenneth Proefrock, “That could mean something as relatively benign and not life threatening as fertility issues, and then something as potentially life threatening as hormone sensitive cancers, like breast, prostate, ovarian cancers.”

However some dermatologists aren’t convinced Oxybenzone is the problem.

Oxybenzone doesn’t block ultraviolet-A rays, and those are the rays that are linked to skin cancer.

In 2008 a study by the Centers for Disease Control found that 97% of Americans have absorbed the chemicals in their bodies.

In Europe sunscreens with Oxybenzone must carry a warning label on the bottles.