Which of the following ingredients is likely to block or clog pores and contribute to acne?

• A. Non-comedogenic
• B. Moisturizing agents
• C. Comedogenic
• D. Mild exfoliants

Answer: (C)

The ingredient identified as comedogenic is known for its potential to block or clog pores, making it a significant contributor to the development of acne. Comedogenic substances tend to be denser and can create a barrier on the skin that traps oil, dead skin cells, and bacteria in the pores. This blockage can lead to the formation of acne lesions, including blackheads and whiteheads.

On the other hand, non-comedogenic ingredients are specifically formulated to avoid clogging pores, thus they are less likely to contribute to acne. Moisturizing agents, while essential for skin hydration, can vary in their comedogenic properties; some may be fine for acne-prone skin, while others might not be. Mild exfoliants, designed to remove dead skin cells from the surface, usually help in preventing pore blockage rather than exacerbating it.

Thus, when considering the likelihood of an ingredient to block pores, comedogenic agents stand out as the main culprits that could lead to acne formation.