LAWSONE is graded A (Safe) by Expert·ING, based on COSING regulatory data.
LAWSONE
Henna
Safety grade: A
Lawsone is the natural coloring compound found in henna plants that gives henna its distinctive reddish-orange color. It's been used for thousands of years to dye hair and skin.
Lawsone bonds to hair proteins to create a semi-permanent reddish-brown to orange hair color that gradually fades over time.
Graded using: COSING.
Last verified: May 26, 2026
Other Hair Dyeing ingredients
- RESORCINOL — Grade E**
- THYMOL — Grade A
- M-AMINOPHENOL — Grade C**
- P-AMINOPHENOL — Grade C**
- 2-METHYLRESORCINOL — Grade C
- 4-AMINO-2-HYDROXYTOLUENE — Grade C
- P-PHENYLENEDIAMINE — Grade D**
- 2-METHYL-5-HYDROXYETHYLAMINOPHENOL — Grade C