evidence: This appears to be a trend, following news that surfaced last summer that several sunscreens contained several different chemicals linked to cancer, leaving people wondering what is safe to use—and what they should toss from their beach bag. [...] Last May, Valisure, an independent quality assurance company in New Haven, Conn., detected high levels of benzene, a known human carcinogen, in 78 sunscreen and after-sun care products. The FDA regulates sunscreen as a drug product and after-sun products as a cosmetic. [...] Another group recently came out with data about a different carcinogen in certain sunscreens, calling for the FDA to remove all sunscreens containing the active ingredient octocrylene from sale. About 2,400 sun-protection products contain the ingredient.