By definition, a cosmetic product is any substance or mixture intended to be placed in contact with the external parts of the human body, with the exclusive or with main objective of cleaning, changing the look, protecting and maintaining good condition, or eliminating body odors. Beyond physical health, cosmetics can help to improve our mood, enhance our appearance and boost our self-esteem. They can also help to exhibit personal style and, as such, are an important means of social expression.