Ingredient Details. High Health Hazard. There is a high level of evidence for Parabens being endocrine disruptors and interfering with Hormone regulation in the body. Parabens are preservatives commonly used in personal care products. Preservatives are used in to inhibit the growth of microbes or bacteria, making the product safe to use and also extending its shelf life ii. There are three most common parabens, methylparaben, propylparaben and butylparaben. Not only are these parabens irritating to the eyes and the skin iv, they have been linked to breast cancer v.