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Parabens are esters of para-hydroxybenzoic acid, from which the name is derived. Common parabens include methylparaben (E number E218), ethylparaben (E214), propylparaben (E216), butylparaben and heptylparaben (E209). Less common parabens include isobutylparaben, isopropylparaben, benzylparaben and their sodium salts.
1 Parabens are absorbed in to the body. 2  In one study of Danish men, methyl-, ethyl-, n-propyl-and n-butyl parabens were measurable in 98%, 80%, 98% and 83% of the men, respectively. (Source) An American study found methyparaben in 99.1% of the study samples.he good news is that a lot of companies are reformulating their products without parabens because the word is getting out. The bad news is, though, that they're just replacing parabens with other harmful preservatives like diazolidinyl urea and tetrasodium EDTA.