Su
Sulfur
SulfurExfoliant
Old-school acne ingredient with modest but consistent evidence — limited mostly by smell and dryness.
What it does
Sulfur is one of the longest-used topical acne ingredients with antimicrobial and mild keratolytic action against inflammatory acne and seborrheic dermatitis. Most modern formulations use 3-10% in masks or short-contact treatments rather than leave-on, because tolerability is the main limitation: characteristic odor, dryness, and occasional flaking drive most users to spot or short-contact use. Effects build over weeks of consistent use.
Also known as
colloidal sulfur, precipitated sulfur
Pairs worth knowing
This page is public and indexed on purpose (unlike profiles and drops, which are unlisted) — it’s the citation behind shared ingredient cards, and it should be findable.
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