At a glance
- Term
- Benzoyl peroxide
- Area
- Ingredients
- Measurable from a selfie
- No
- Evidence
- Established
- Related
- Acne, Comedone, Salicylic acid
What the evidence supports
Evidence: established. Benzoyl peroxide has an established role in treating acne. The American Academy of Dermatology's Acne: Diagnosis and treatment explains that it reduces acne-causing bacteria on your skin.
That evidence supports its use as an antibacterial acne ingredient. It doesn't mean every breakout needs the same treatment. The Academy explains that different types of acne can need different treatments, sometimes used together.
What a selfie can and can't measure
Measurable from a selfie: No. A photo cannot measure benzoyl peroxide concentration or tell you which strength your skin will tolerate. Read the product label for its strength.
The free acne scan counts and maps visible spots from one photo. That is a record of what appears in the image, rather than a measurement of this ingredient.
The common mistake is reading one number from one photo as a fixed fact about your face. A spot count doesn't tell you which medicine to use.
How to approach the strength on the label
Don't choose a benzoyl peroxide cream or wash solely because it has the highest percentage. The lower strength can offer similar results with less dryness. More isn't automatically better.
Ask a pharmacist which formulation suits your needs, and follow the instructions for that product. A wash and a cream have different directions; don't assume you should use them identically.
If you're comparing it with salicylic acid, remember that these are different ingredients. Their names aren't interchangeable instructions for treating a breakout.
When to ask for medical help
Ask a GP for help if pharmacy treatment hasn't worked or your acne is moderate or severe. The NHS guidance Acne: Treatment recommends medical assessment in these situations, including painful nodules that need treatment to limit scarring.
Bring the product name and strength you've used. Those details give the clinician more useful information than a photo score alone.
Questions people ask
- Is benzoyl peroxide an ingredient or a skin condition?
- It's an ingredient used in acne washes and creams. Acne is the condition it treats.
- Does 10 percent work better than 2.5 percent?
- Not automatically. A 2.5 percent product works about as well as 10 percent, with less dryness.
- Can benzoyl peroxide bleach bedding?
- Yes. It can bleach pillowcases and towels, so avoid contact with fabrics you don't want discoloured.
Written from the measurements and ingredient facts on this site, then checked for the usual mistakes. Not medical advice.