Introductions of industrial chemicals into Australia can be categorized as listed introductions, exempted introductions, reported introductions, assessed introductions, or commercial evaluation introductions. Cosmetic companies shall classify their chemicals according to the Industrial Chemicals Act 2019 and the Industrial Chemicals (General) Rules 2019 (the IC General Rules). This guide provides a detailed definition of the terms used in the Industrial Chemicals (General) Rules, assisting introducers in more accurately classifying their chemicals.