Experts and the FDA stress the sun's link to cancer and aging is real, so don't abandon sun protection.
The new study reevaluated three of the original four (avobenzone, oxybenzone and octocrylene) and added three additional sunscreen chemicals -- homosalate, octisalate, and octinoxate.
After initial absorption, the concentration of the six chemicals in the blood increased each day of application, and remained above FDA safety levels at day seven, well after application had ended.
Sun dangersOne in five Americans will develop skin cancer by the age of 70, the Skin Cancer Foundation says.
In the 2019 study, "oxybenzone was absorbed into the body at about 50 to 100 times higher concentration" than the others tested, Andrews said.