PEG-40 is made using ethylene oxide, a toxic gas known to cause cancer. Residues of this carcinogen and 1,4-dioxane (a byproduct) often remain in final products. The EPA and IARC classify these substances as serious health risks, yet their removal during production is incomplete, leaving lingering dangers. As a harsh surfactant, PEG-40 strips natural oils, weakening the skin barrier. This leads to dryness, microtears and heightened sensitivity to pollutants and infections. Found in cleansers, lotions, sunscreens and makeup, PEG-40 functions as an emulsifier, thickener and stabilizer. Its low cost and versatility ensure widespread use, but labels rarely warn of hidden risks like…

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