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We use lots of different things in the modern life but do a lot of ordinary things wrong. The harm they cause has been proven by different researchers! For example, is it safe to wash your hands using antibacterial soap?
Very often different companies use targeted methods of influence to make you buy questionable things you don't need. However, some of them may be not only unnecessary but also quite dangerous for your health.
You're about to see some ordinary things you most likely have at home. Are you sure you should continue using mascara? You rarely think about the level of their quality, but the harm they cause has been proven by different researchers.