Which term defines the ability of a substance to cause skin irritation or acne?

The term that defines the ability of a substance to cause skin irritation or acne is comedogenicity. This concept refers specifically to the tendency of certain ingredients or substances to clog pores, leading to the formation of comedones, which are often recognized as blackheads and whiteheads. When comedogenic substances are applied to the skin, they can lead to an increase in acne lesions, irritations, and other related skin conditions.

Understanding comedogenicity is crucial in the field of medical aesthetics, as practitioners must be knowledgeable about the ingredients in skincare products and their potential effects on different skin types. For example, products that are labeled as non-comedogenic are formulated to minimize the risk of clogging pores, making them preferable for those prone to acne.

The other terms, while relevant in dermatology, refer to different concepts. Dermatotoxicity relates to the toxic effects a substance might have on the skin, allergenic potential refers to the likelihood of a substance causing an allergic reaction, and hyperactivity typically describes an overactive condition, which is not specifically linked to skin irritation or acne.