Abstract: The present disclosure provides a method of manufacturing customized cosmetics in which a conventional cosmetics production process for producing complete products in a factory is segmented such that a base product, functional material and/or additive are produced or prepared in a factory individually, and a user may select the functional material and/or additive in accordance with usage preference and/or skin conditions of the user and mix the selected functional material and/or additives with the base product, thereby satisfying various needs of users and enabling each individual to prepare cosmetics tailored to him/her.