Ingredient guide
Benzoyl peroxide
benzoyl peroxide
In short
Benzoyl peroxide (also known as bpo) is a skincare active generally associated with the look of pores. It is backed by a strong body of published research. It is often chosen for oily and combination skin. MIRU describes it by what is visible on skin — never as a treatment or cure.
Reviewed against published evidence · editorially independent · no brand pays for placement
Works for
Pores
Skin type
Oily · Combination
Best used
Anytime
What it is
Gold standard for active breakouts. Drying. Bleaches fabrics.
When to use it
Mornings work well when a retinoid holds your evenings — the two like about twelve hours of distance.
Start a few days a week and see how skin settles.
On the label
2.5–10% on labels
Research finds 2.5% about as helpful as 10%, with less dryness along the way.
Pairs well with
Give these space
Benzoyl peroxide oxidises retinol, making it ineffective.
Use benzoyl peroxide in AM and retinol in PM on different nights.
Benzoyl peroxide oxidises Vitamin C, negating its benefits.
Keep these in separate routines — AM vs PM.
The same rules the product checker and routine builder run — friendly scheduling, not prohibitions.
Where it sits
Serums sit after toner and before moisturiser — thinnest to thickest, water before oil.
- Cleanse
- Tone
- Benzoyl peroxide
- Moisturise
- SPF
Also found as
Related
Where to find it
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Search the Lens for benzoyl peroxideCommon questions
What does Benzoyl peroxide do for skin?
Benzoyl peroxide is associated in published research with the look of pores. Gold standard for active breakouts. Drying. Bleaches fabrics. MIRU frames ingredients by what is visible, not by medical claims.
When should I use Benzoyl peroxide?
Benzoyl peroxide is typically used morning or evening. Introduce any new active on its own first and add one product at a time so you can see how your skin responds.
Is Benzoyl peroxide suitable for my skin type?
Benzoyl peroxide is often chosen for oily and combination skin. It can be used with care — if your skin is reactive, patch-test first and watch for any irritation.
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Personal guidance only · For clinical concerns, see a dermatologist.