Which of the following ingredients is used to dry, exfoliate, and help in killing bacteria?

• A. Salicylic acid
• B. Benzoyl peroxide
• C. Glycolic acid
• D. Tea tree oil

Answer: (B)

Benzoyl peroxide is particularly effective for treating acne and is favored for its multifaceted approach to managing blemishes and breakouts. It functions as a powerful antibacterial agent, targeting the bacteria that contribute to acne. This ingredient not only helps to kill the bacteria on the skin, but it also promotes drying out excess oil and exfoliating dead skin cells, which can clog pores.

This dual action of exfoliation and bacteria elimination makes benzoyl peroxide a popular choice in acne treatment formulations. It is important to use this ingredient correctly, as it can cause dryness and irritation if used excessively.

In contrast, salicylic acid primarily serves as an exfoliant that penetrates pores to remove dead skin cells and reduce oiliness, but it does not possess the same broad antibacterial properties as benzoyl peroxide. Glycolic acid, while effective as an exfoliant, focuses more on improving skin texture and tone but lacks strong antibacterial effects. Tea tree oil is a natural antiseptic that can help fight bacteria, but its primary function is more soothing rather than a strong drying agent compared to benzoyl peroxide.