Dimensions, quantity, or capacity as ascertained by comparison with a standard. A reference standard or sample used for the quantitative comparison of properties. A unit specified by a scale, such as a degree, or by variable conditions, such as room temperature. A system of measurement, such as the metric system.
This definition sets three general conditions that cosmetic products must meet: 1  Cosmetic product is a single substance or a preparation. 2  It is only applied / used on the external parts of the human body.
Cosmetic chemistry is the science of creating cosmetics. A cosmetic chemist develops improved, safer, and novel cosmetic products for people to use. Cosmetic chemists might work on projects such as a moisturizer that doesn't clog skin pores, a blush with a smoother texture, or a mix of fragrances to be used in a new perfume or cologne.