Benzoyl peroxide is one of the most effective topical medications for managing acne.
Benzoyl peroxide operates through two primary and powerful mechanisms: 1. Antimicrobial Action: Benzoyl peroxide (BPO) targets a bacteria known as Cutibacterium acnes which is a major trigger for inflammatory acne. Unlike oral antibiotics or topical antibiotics, bacteria cannot develop resistance to benzoyl peroxide. 2. Keratolytic Action: Benzoyl peroxide acts as a mild exfoliant. It helps dissolve the sticky glue holding dead skin cells together, peeling away the surface layer of skin to help clear blocked pores and comedones.
In dermatological practice, benzoyl peroxide is frequently combined with other active ingredients to boost efficacy. Prescription combination creams, such as Epiduo (BPO + adapalene) or Duac (BPO + clindamycin), are effective and widely used.
While powerful, benzoyl peroxide can cause dryness, stinging, and peeling, particularly in the first few weeks of use. Benzoyl peroxide is a bleaching agent. It will permanently bleach hair, towels, pillowcases, and clothing. Patients should thoroughly wash their hands after application and consider using white towels and pillowcases during treatment.