What benzoyl peroxide does for your skin

Benzoyl Peroxide · BPO · BP

Clarity

Benzoyl peroxide is one of the most-studied actives for inflamed, stubborn breakouts, and it tends to show a visible difference faster than many alternatives. In cosmetic terms it purifies and refines. The smart move is to go lower on strength than you'd think.

What Benzoyl Peroxide is

Benzoyl peroxide suits angrier, inflamed-looking breakouts, where BHA tends to suit calmer congestion. Go with 2.5%: it performs much like the stronger 5 to 10% versions but with about half the irritation. Two heads-ups worth knowing before you start.

What Benzoyl Peroxide is good for

inflamed, angry-looking breakouts
stubborn spots that other actives don't shift
oily, blemish-prone skin
a clearer, calmer-looking finish over time

How to use it

2.5% is the sweet spot: as effective, far less irritating.
It bleaches fabric, so mind your towels and pillowcases.
If you also use retinol or vitamin C, put benzoyl peroxide on in the morning and save those for night.
Ease in rather than starting daily.

What it pairs with

Keep it apart from retinol, retinal, vitamin C, AHAs and BHA in the same layer, since it cancels some of them out on contact. The classic split is benzoyl peroxide in the morning, retinol at night. Baselit handles this split for you.

Benzoyl Peroxide for specific concerns

benzoyl peroxide for cystic breakouts

suits inflamed, angry-looking breakouts

benzoyl peroxide strength

2.5% works about as well as 5 to 10% with far less irritation

benzoyl peroxide vs salicylic acid

benzoyl peroxide suits inflamed spots; BHA suits calmer congestion

benzoyl peroxide for oily skin

a purifying choice for oily, blemish-prone skin

Frequently asked questions

What does benzoyl peroxide do for skin?

In cosmetic terms, benzoyl peroxide purifies and refines. It's one of the most-studied actives for inflamed, stubborn breakouts and tends to show a visible difference faster than many alternatives.

What strength of benzoyl peroxide is best?

2.5% is the smart choice. It performs much like the stronger 5 to 10% versions but with about half the irritation, so you get the benefit with less redness and dryness.

Can I use benzoyl peroxide with retinol?

Not in the same layer, since benzoyl peroxide cancels retinol out on contact. Put benzoyl peroxide on in the morning and save retinol for night. Baselit's routine builder splits them for you automatically.

Does benzoyl peroxide bleach fabric?

Yes. It can bleach towels, pillowcases and clothing, so be careful around fabrics and let it dry before it touches them. White bedding is the safe choice.

Is benzoyl peroxide better than salicylic acid?

They suit different looks. Benzoyl peroxide tends to suit angrier, inflamed breakouts, while salicylic acid (BHA) suits non-inflamed bumps and congestion. Some routines use both on different days.

Baselit is a cosmetic skin-analysis app, not medical advice. This guide describes what ingredients do for the look and feel of skin. It is not a diagnosis or treatment, and it is no substitute for a doctor or dermatologist.