How does sunscreen work? Can it really prevent wrinkles and cancer?

Credit: American Chemical Society.

It’s summer, and before you head to the beach or pool, you might slather on sunscreen.

But is it doing anything beyond preventing a sunburn?

Can it really prevent wrinkles and skin cancer?

Check this video about sunscreen from Reactions:

Reactions is a video series produced by the American Chemical Society and PBS Digital Studios.

The American Chemical Society (ACS) is a nonprofit organization chartered by the U.S. Congress.

ACS’ mission is to advance the broader chemistry enterprise and its practitioners for the benefit of Earth and all its people.

The Society is a global leader in promoting excellence in science education and providing access to chemistry-related information and research through its multiple research solutions, peer-reviewed journals, scientific conferences, eBooks and weekly news periodical Chemical & Engineering News.

As a leader in scientific information solutions, its CAS division partners with global innovators to accelerate breakthroughs by curating, connecting and analyzing the world’s scientific knowledge.

ACS’ main offices are in Washington, D.C., and Columbus, Ohio.