RHEIN is graded A (Safe) by Expert·ING, based on COSING regulatory data.
RHEIN
Safety grade: A
Rhein is a natural compound found in plants like rhubarb and senna that has antimicrobial properties. It helps protect cosmetic products and skin from unwanted bacteria and microorganisms.
Rhein is used in cosmetics for its antimicrobial properties to help prevent the growth of bacteria and other microorganisms that can cause product spoilage or skin irritation.
Graded using: COSING.
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