Trifluoropropyldimethyl/trimethylsiloxysilicate : siloxane polymers. Siloxane polymers are polymers in which the backbone structure consists of alternating silicon and oxygen atoms. C6H18O5Si3. Safe for fungal acne.

"PFAS, short for perfluoroalkyl and polyfluoroalkyl substances, are a group of at least 4,700 synthetic chemicals that have been in commercial production since the 1940s to make surfaces resist stains, water and grease...Health effects of the various kinds of PFAS are debated, but a growing body of evidence has linked exposure to some of them to:

Developmental issues, cancer, liver damage, immune system disruption, resistance to vaccines, thyroid disease, impaired fertility and high cholesterol. PFAS have been dubbed “possibly carcinogenic” to humans by the Environmental Protection Agency (EPA) and the International Agency for Cancer Research (IARC).

A study funded by DuPont as part of a legal settlement with residents living near one of its Teflon facilities found that PFOA was probably linked to six disease outcomes: kidney cancer, testicular cancer, thyroid disease, ulcerative colitis, high cholesterol and pregnancy-induced hypertension.
Numerous studies on PFOS and PFOA on both humans and animals have shown a wide range of possible health effects, including decreased fertility among women, decreased sperm count and penis size, lowered birth weight, cancer and – among animals studied – death."
Source: https://www.theguardian.com/us-news/2019/may/23/pfas-everyday-products-toxics-guide

"A growing number of toxicological and epidemiological studies also suggest that elevated exposure to PFASs is related to adverse health effects in human populations."
Source: https://pubs.rsc.org/en/content/articlelanding/2018/em/c8em00368h#!divAbstract