WASHINGTON - More than half the cosmetics sold in the United States and Canada are awash with a toxic industrial compound associated with serious health conditions, including cancer and reduced birth weight, according to a new study.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, 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.