COLLOIDAL SULFUR is graded A** (Safe) by Expert·ING, based on COSING, FDA regulatory data.
COLLOIDAL SULFUR
Safety grade: A**
Colloidal sulfur is tiny particles of sulfur suspended in a liquid, creating a milky mixture. It's been used for centuries to help clear up acne and other skin concerns.
This ingredient works as an antimicrobial agent to help reduce bacteria and fungi on the skin, making it useful for treating acne-prone and oily skin.
Graded using: COSING, FDA.
Last verified: May 26, 2026
Other Antimicrobial ingredients
- ALCOHOL — Grade A**
- C12-15 ALKYL BENZOATE — Grade A
- BENZYL BENZOATE — Grade C
- CETRIMONIUM CHLORIDE — Grade A
- CHLORPHENESIN — Grade B
- CAMELLIA SINENSIS LEAF EXTRACT — Grade A
- HYDROGEN PEROXIDE — Grade C**
- CETYLPYRIDINIUM CHLORIDE — Grade A