Several brands of condoms and lubricants contain alarming levels of toxic PFAS “forever chemicals”, including styles of Trojan and K-Y Jelly, new research finds.

The testing conducted by the Mamavation consumer advocacy blog comes just as researchers found human skin absorbs the chemicals at much higher levels than previously thought.

Penis and vagina skin is thin and the organs have a high level of blood vessels, which makes them particularly dangerous organs to expose to PFAS, Linda Birnbaum, a science adviser for Mamavation who previously ran the Environmental Protection Agency’s toxicology program, wrote in the report.

“The vagina and penis are incredibly vascular areas and dermal exposure to these areas are often higher than other places of the body,” Birnbaum said.