Azelaic acid is described as?

• A. An antibiotic
• B. A retinoid
• C. An acid that promotes drying and cell turnover
• D. A moisturizer

Answer: (C)

Azelaic acid acts as a keratolytic agent that promotes drying and accelerates epidermal turnover. This helps normalize keratinization, unclog pores, and prevent new comedones from forming. It also brings anti-inflammatory and antimicrobial effects, reducing redness and the growth of acne-causing bacteria. Because of these actions, it’s not an antibiotic, not a retinoid, and not a moisturizer, yet it helps clear acne lesions through thinning and renewing the skin surface.