A new study conducted by researchers in the United States, Canada and Switzerland concluded that some types of cosmetics contain harmful chemicals, most of which cause serious diseases, including cancer, reduced fertility, impaired immune response, metabolic changes and an increased risk of obesity.
The study found that many types of lipstick and mascara contain high levels of a toxic chemical called polyfluoroalkyl.
The study said that cosmetics producers rarely mention that these substances are present in the ingredients, which makes them difficult to avoid and accumulate over years in the body, causing serious health problems.
According to the study, these ingredients are also used in lubricants, stain removers, paint and firefighting foams.The researchers found highly toxic and environmentally harmful substances in about 52 percent of these products, which included waterproof mascara, eye-shadows, eyeliners, lipsticks and foundations.
The researchers said that many of these products are designed to be placed near the mouth or eyes, which can increase exposure through licking or absorption by the skin or through the tear ducts.