INCI: Inhaltsstoffe - haut.de is a free Android app developed by healthmedia GmbH. The app provides information about the ingredients used in cosmetic products based on the European Cosmetics Regulation (INCI = International Nomenclature Cosmetic Ingredients). With more than 20,000 ingredients, the user can obtain current information on the tasks of each ingredient. The app offers three convenient search routines: searching via the INCI name, selecting via substance groups (e.g., emulsifiers or specific active ingredients), and selecting via application areas (e.g., face mask, shampoo, eyeliner). With this app, users can stay informed about the ingredients in cosmetic products and make informed purchasing and usage decisions, whether shopping or on vacation. The data is regularly updated and available offline on the device.