Frequently asked questions
Is sulfur comedogenic?
Sulfur scored 0 out of 5 for comedogenicity in Fulton's 1989 rabbit-ear study, where 0 means no clogging and 5 means severe. That is a low rating. The test used the raw ingredient, so a finished product may behave differently.
What does sulfur do in skincare?
In short: old-school acne active that dries pimples and unclogs pores. In formulas it is used for antidandruff, antiseborrhoeic, antistatic, hair conditioning and skin conditioning.
What else is sulfur called on ingredient labels?
On ingredient lists, sulfur can also appear as Sulphur, Precipitated sulfur or Colloidal sulfur.
Sources
- Fulton JE Jr. "Comedogenicity and irritancy of commonly used ingredients in skin care products." Journal of the Society of Cosmetic Chemists. 1989;40(6):321-333. Table I (rabbit ear assay, 0 to 5).
- European Commission CosIng, Ingredients and Fragrance Inventory (function field). CSV mirror dated 2016-02-15 via the Open Beauty Facts repository.
- Reynolds RV, et al. "Guidelines of care for the management of acne vulgaris." JAAD. 2024;90(5):1006.e1-1006.e30.