Exfoliants & acne actives
Sulfur
Also listed as Sulphur, Precipitated sulfur and Colloidal sulfur
Sulfur is one of the oldest topical skincare ingredients, used in masks, spot treatments and washes for oily, breakout-prone skin. In the US it is an approved over-the-counter acne drug at 3–10%.
What it does
The short version.
On skin, sulfur is converted to compounds with mild antibacterial and antifungal activity, and it has a drying, peeling (keratolytic) effect that helps clear clogged pores. It is usually found in clay masks and spot treatments, often combined with resorcinol or sodium sulfacetamide. Its distinctive smell is a common complaint, though modern formulas mask it.
Emerging evidence
Long clinical use, but few modern controlled trials of sulfur alone; a Cochrane review found the acne evidence for sulfur to be of low certainty. Prescription sodium sulfacetamide-sulfur products have more data.
Reach for it for
Usually a good fit for
How to use it
Getting it right.
Apply as a spot treatment or leave-on mask for the time on the label (often 10 minutes for masks), then rinse or moisturize. Use sparingly at first.
Layering
Friends & frenemies.
Pairs well with
Go slow with
Not forbidden — just easier to over-do. Alternate nights or separate morning and evening.
Before you start
Can dry and irritate, especially combined with other acne actives. Has a noticeable odor. Do not use if you have a known sulfur or sulfonamide allergy without asking a clinician.
References
- 1The use of sulfur in dermatology — Journal of Drugs in Dermatology (2004), via PubMed
- 2Topical azelaic acid, salicylic acid, nicotinamide, sulphur, zinc and fruit acid (alpha-hydroxy acid) for acne — Cochrane Database of Systematic Reviews (2020), via PubMed
Educational, not medical advice. Ingredient guides summarise published research and expert guidance; formulas and concentrations differ between products.
No sulfur products reviewed yet.
We add products every week. The guide above still stands — and Beauty Match can find what suits you today.
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