In Australia, a cosmetic is defined under the Industrial Chemical (Notification and Assessment) Act1989 as a substance or preparation intended for placement in contact with any external part of the human body which includes the mouth and teeth. Cosmetics are used to cleanse, perfume, protect and change the appearance of the body or to alter its odors. They are made up of mixtures of chemical substances.
Fragrance chemicals are organic compounds that add odours, usually pleasant ones, to cosmetics such as perfumes. They are not only used in cosmetics but are also found in detergents, fabric softeners and other products to mask unpleasant odours from raw materials. They can also be found naturally in foods such as herbs and spices, complementary medicines, and Over-The-Counter (OTC) products, sometimes at higher levels than may be used in a fragrance.