Can you use benzoyl peroxide with sulfur?
The chemistry
Benzoyl peroxide is a first-line acne treatment that kills Cutibacterium acnes without causing antibiotic resistance (Zaenglein 2016; Reynolds 2024). Sulfur has antibacterial, antifungal and mild keratolytic (peeling) activity and has long been used for acne, rosacea and seborrheic dermatitis, with mostly mild application-site reactions (Gupta 2004). Used together on the same skin at the same time, the drying effects add up.
Overlap
Both target acne bacteria; one strong drying step at a time.
Split
Benzoyl peroxide wash in the morning, sulfur spot or mask at night.
Fabric
Benzoyl peroxide bleaches towels and pillowcases.
Common mistakes
Sulfur is usually sold as a mask, a spot treatment or a wash, often at 3 to 10%, and sometimes combined with sodium sulfacetamide on prescription. Benzoyl peroxide comes as washes and leave-on gels from 2.5 to 10%. The easiest way to use both is to give each its own slot: a benzoyl peroxide wash in the morning, which you rinse off, and a sulfur spot treatment at night only on active spots. Another option is to keep benzoyl peroxide as your daily treatment and use a sulfur mask once or twice a week instead of on the same nights. Sulfur has a distinctive smell and can be drying, so it suits oily skin better than dry skin. If you are on a retinoid such as adapalene too, that is already a full routine; add sulfur only if you still need it.
Your routine
Morning
- Benzoyl peroxide wash
- Oil-free moisturizer
- Sunscreen SPF 30+
Evening
- Gentle cleanser
- Sulfur spot treatment on active spots
- Moisturizer
Sample week
Alternate days at first; once skin is settled you can try benzoyl peroxide wash in the morning and sulfur at night.
Go slower if
Stop and simplify if your skin peels, stings or turns red. Benzoyl peroxide can bleach hair, towels and clothing.
Evidence strength
Strong for benzoyl peroxide (Zaenglein 2016; Reynolds 2024). Moderate for sulfur, based on long clinical use and reviews (Gupta 2004). No trial tests these two together; the advice is based on their overlapping drying effects.
Products with benzoyl peroxide
PanOxyl Acne Creamy Wash 4% Benzoyl Peroxide
Picked for benzoyl peroxide
4% benzoyl peroxide as the labelled active, in a creamy wash.
Buy on Amazon (opens in a new tab)FAQ
Can I mix benzoyl peroxide and sulfur in one step?
Not recommended. Using both at once adds dryness without proven extra benefit.
Is sulfur gentler than benzoyl peroxide?
Often, but it can still dry skin and it smells strongly.
Can sulfur help fungal acne?
Sulfur has antifungal activity, but see a doctor to confirm what you have.
Can I use a sulfur mask while using benzoyl peroxide daily?
Yes, once or twice a week on nights you skip benzoyl peroxide.
Is sulfur safe in pregnancy?
Topical sulfur is generally considered low risk, but check with your doctor.
Related combinations
- RetinolYes, with timing
- Vitamin CYes, with timing
- NiacinamideYes
- TretinoinYes, with timing
- Salicylic AcidYes, with timing
- Hyaluronic AcidYes
- Glycolic AcidYes, with timing
- SunscreenYes
Sources
- Gupta AK, Nicol K. The use of sulfur in dermatology. J Drugs Dermatol. 2004;3(4):427-431.
- Zaenglein AL, et al. Guidelines of care for the management of acne vulgaris. J Am Acad Dermatol. 2016;74(5):945-973.
- Reynolds RV, et al. Guidelines of care for the management of acne vulgaris. J Am Acad Dermatol. 2024;90(5):1006.e1-1006.e30.