Emily Elert is a science journalist and writer. Her work has appeared in DISCOVER, Popular Science, Scientific American, and On Earth Magazine.
Last month, CBS Boston aired a story about a man in Massachusetts who caught fire while operating a grill in his backyard. He wasn’t going crazy with lighter fluid, nor was he being careless with propane. No, the culprit was Banana Boat Sport Performance spray-on sunscreen.
But don’t be too quick to blame the orange bottle. After all, this kind of thing does occasionally happen when people spray flammable substances from aerosol cans in close proximity to burning coals. There are, however, other reasons to be suspicious of the summertime mainstay: several recent reports have raised questions about both the effectiveness and safety of sunscreens.
In fact, the National Cancer Institute, a branch of the NIH, declares on its website that studies on sunscreen use and cancer rates in the general population have provided “inadequate evidence” that sunscreens help prevent skin cancer. What’s more, research suggests that some sunscreens might even promote it.
Those are heavy charges for a product that people have long felt so good about using.