Researchers at the University of Notre Dame tested more than 230 commonly used cosmetics and found that 56% of foundations and eye products, 48% of lip products and 47% of mascaras contained fluorine — an indicator of PFAS (Per- and polyfluoroalkyl substances), so-called “forever chemicals” that are used in nonstick frying pans, rugs and countless other consumer products. 

• Some of the highest PFAS levels were found in waterproof mascara (82%) and long-lasting lipstick (62%), according to the study published Tuesday in the journal Environmental Science & Technology Letters.  
• Twenty-nine products with higher fluorine concentrations were tested further and found to contain between four and 13 specific PFAS chemicals, the study found. Only one item listed PFAS as an ingredient on the label. 

Source: https://www.thehindu.com/sci-tech/science/half-of-us-cosmetics-contain-toxic-chemicals-study/article34827360.ece