As someone who has waxed with HF wax several dozen times in the past (collegiate nordic ski racer) with no face mask and mediocre room ventilation, how worried should I be about long-term side effects?
[1] https://www.atsdr.cdc.gov/pfas/pfas-blood-testing.html
The blood serum levels reported by CDC are staggering. As an example, I have a well and it's in a contamination plume of PFOS and PFOA. The EPA certified laboratory measured level two years ago was 11 ppt (parts per trillion.) The CDC measured 2.1 ug/L of PFOA (only) in the blood of over 2000 people in 2014. That's 2,100,000 ppt; 5 orders of magnitude higher than my 'contaminated' water.
A ug is 10E-6 grams, a liter is about 10E+3 grams.
Also, it's in our drinking water currently anyways, so if you want to stress out about PFAS might as well do it over something we can change going forward: https://www.reuters.com/article/us-usa-water-foreverchemical...
> In 2018 a draft report from an office of the U.S. Department of Health and Human Services said the risk level for exposure to the chemicals should be up to 10 times lower than the 70 PPT threshold the EPA recommends. The White House and the EPA had tried to stop the report from being published.