Washington Esthetician State Board Practice Exam

What is comedogenicity?

1. The ability of a substance to hydrate the skin

2. The tendency of any topical substance to cause or worsen a buildup of dead cells

3. The capacity of a product to prevent acne

4. The degree to which an ingredient can exfoliate

The correct answer is: The tendency of any topical substance to cause or worsen a buildup of dead cells

Comedogenicity refers specifically to the tendency of a substance to cause or exacerbate the formation of comedones, which are clogged hair follicles in the skin. This process can lead to breakouts, particularly in individuals who are prone to acne. Understanding comedogenicity is crucial for estheticians, as they must be able to assess and recommend products that won't negatively impact their clients’ skin, especially if those clients are already dealing with acne-prone skin. When evaluating skincare products, an esthetician needs to consider how certain ingredients might contribute to the buildup of dead skin cells and oil, leading to clogged pores. Products that are labeled as non-comedogenic are formulated to minimize this risk, making them safer options for individuals who are concerned about acne. The other choices pertain to different aspects of skincare or product functionality. Hydration deals with moisture, preventing acne involves more than just comedogenicity, and exfoliation pertains to the removal of dead skin cells rather than the buildup that comedogenic substances may cause. These distinctions make it clear that the focus of comedogenicity centers on the potential for clogging pores and triggering acne rather than hydration or exfoliation properties.