Ethylparaben is a preservative and helps prevent the growth of harmful bacteria and mold, protecting both products and consumers. Parabens in general are highly effective and widely used preservatives that enhance the shelf life and safety of products including all types of cosmetics, as well as foods and drugs, and protect the families who trust and enjoy them. The most commonly used parabens in cosmetics are methylparaben, ethylparaben, propylparaben, and butylparaben.