What is Epiduo?
Epiduo is a dual-action treatment for acne. Its two active ingredients, adapalene, a retinoid, and benzoyl peroxide, an antiseptic, work together to reduce spots, inflammation, and hyperpigmentation. Epiduo is available in two strengths and is typically applied every day, although this may vary based on the severity of your acne and your skin’s sensitivity.
How does Epiduo work?
Epiduo contains two active ingredients, each working differently to treat acne.
- Adapalene is a retinoid that increases cell turnover. This means that old skin is shed more quickly, making way for new skin. This process helps clear old spots and reduce hyperpigmentation. Additionally, it relieves redness and swelling associated with acne. Adapalene can also prevent future spots from developing.[1]
- Benzoyl peroxide is an antiseptic that targets the bacteria responsible for acne, preventing new breakouts. It also helps remove excess oil and alleviates inflammation, swelling, and redness.[2]
Because of the way Epiduo works, it’s an effective treatment for acne, with studies showing that over 90% of patients show improvement.[3]
Is Epiduo similar to Benzoyl peroxide?
In a way, yes. This is because Epiduo contains benzoyl peroxide (alongside adapalene). While benzoyl peroxide can be used as a standalone treatment for acne, Epiduo is generally thought to be more effective.
What doses of Epiduo are there?
Epiduo comes in two strengths: 0.1% adapalene and 2.5% benzoyl peroxide, or 0.3% adapalene and 2.5% benzoyl peroxide. It’s typically applied as a thin layer every evening.
Treated trusted source:
- Tolaymat L, Dearborn H, Zito PM. Adapalene. [2023]. In: StatPearls [Internet]. Treasure Island.
- Czyz, S., Yang, K., & Jafarian, F. (2025). Benzoyl peroxide in the treatment of acne: Are there potential health concerns? Frontiers in Pediatrics, 13, 1599491.
- Czyz, S., et al. (2025). Benzoyl peroxide in the treatment of acne: Are there potential health concerns? Frontiers in Pediatrics, 13, 1599491.
This page was medically reviewed by
Ms Sanjeda Chowdhury on October 05, 2026. Next review due on
October 05, 2029.
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