Cosmetics often contain formaldehyde or a formaldehyde releasing substance. The formaldehyde acts as a preservative in the cosmetics. In the United States many cosmetics contain Quaternium 15, which is a formaldehyde releasing agent. Quaternium 15 and other formaldehyde releasing materials are found in shampoos, conditioners, deodorant soap, hairspray, styling mousse, fluoride toothpastes, mouthwash, mascara, talcum powders,haircolors, makeup foundations, firming facial creams and fingernail polish. Even "Natural" cosmetics such as those marketed by Garden Botanika™ contain diazolidinyl urea, which is another formaldehyde-releasing preservative.