The general term for the ingredients used for fragrance purposes, not a term for a single ingredient, generally can be divided into animal, plant and artificial synthesis. If you want to inquire about the information of a specific fragrance, please use the more precise ingredient name.
Used as a collective name for many unpublished fragrance ingredients. The actual number exceeds a thousand, and there are at least dozens of them that have the possibility of causing acne, including many seaweeds and vegetable oils. Compared with vegetable oils, essential oils extracted from aromatic plants are generally less comedogenic as a source of fragrance, but some essential oils may cause skin irritation. Sometimes the situation is more complicated, manufacturers will combine plant essential oils and synthetic fragrances then label them only as the word fragrance.
Patients with acne should try to avoid fragrant products, and if it is unavoidable, they should carefully test only one new product at a time.