The definition of a cosmetic varies slightly from country to country, which lays the initial groundwork for the differences observed between legislations.
In theEuropean Union, cosmetics are defined as "any substance or mixture intended to be brought into contact with the external parts of the human body, such as the skin, hair, nails, lips or external genital organs, or with the teeth and oral mucous membranes, with the exclusive or primary aim of cleaning, perfuming, changing the physical appearance, protecting, keeping in good condition or correcting body odours." This definition is stated in Regulation (EC) No 1223/2009 of the European Parliament and of the Council on cosmetic products.
In the United States, the Food and Drug Administration (FDA) defines a cosmetic as "any substance or preparation intended to be applied to the human body for cleansing, perfuming, changing the appearance, protecting, or maintaining in good condition." Furthermore, it is interesting to note that in the United States, a sunscreen is not considered a cosmetic product but an "over the counter (OTC) drug", that is, a medication that the consumer can purchase without a prescription.
In China and in Japan, cosmetics are defined as "any substance or preparation intended to be applied to the human body for the purposes of cleaning, perfuming, altering appearance, protection, or maintaining in good condition." Furthermore, cosmetic products are divided into two categories: "special" cosmetics, including hair dyes, perms, whitening products, depigmenting products, anti-hair loss products, sun products, and any product with a new efficacy, and "general" cosmetics, referring to all other products. It is also worth noting that toothpastes are not considered cosmetic products in China, unlike in Europe.