Also known simply as a composite. A grouping of equities, indexes or other factors combined in a standardized way, providing a useful statistical measure of overall market or sector performance over time.
Parabens are among the most commonly used preservatives in cosmetic products. Chemically, parabens are esters of p-hydroxybenzoic acid. The most common parabens used in cosmetic products are methylparaben, propylparaben, and butylparaben.Typically, more than one paraben is used in a product, and they are often used in combination with other types of preservatives to provide preservation against a broad range of microorganisms.DA has received a number of inquiries on the safety of parabens, which are commonly used as preservatives in cosmetics. Here are answers to questions consumers often ask about these ingredients.
Parabens have been widely used in products to prevent bacteria growth since the 1950s. âAbout 85 percent of cosmetics have them,â says Arthur Rich, Ph.D., a cosmetic chemist in Chestnut Ridge, New York.âTheyâre inexpensive and effective.â New York City dermatologist Fran E. Cook-Bolden explains, âParabens have a long history of safe use, and thatâs why theyâre commonplace.arabens have been widely used in products to prevent bacteria growth since the 1950s. âAbout 85 percent of cosmetics have them,â says Arthur Rich, Ph.D., a cosmetic chemist in Chestnut Ridge, New York.