ACETYL CYSTEINE is graded A (Safe) by Expert·ING, based on COSING regulatory data.
ACETYL CYSTEINE
Safety grade: A
Acetyl Cysteine is an amino acid derivative that comes from a natural protein building block. It works to protect skin from damage and helps keep skin healthy and moisturized.
This ingredient protects skin from environmental damage and free radicals while improving skin hydration and overall skin condition.
Graded using: COSING.
Last verified: May 26, 2026
Other Antioxidant ingredients
- TOCOPHEROL — Grade A
- TOCOPHERYL ACETATE — Grade A
- BHT — Grade C**
- ASCORBYL PALMITATE — Grade A
- HYDROXYACETOPHENONE — Grade A
- PENTAERYTHRITYL TETRA-DI-T-BUTYL HYDROXYHYDROCINNAMATE — Grade A
- ASCORBIC ACID — Grade A
- CAMELLIA SINENSIS LEAF EXTRACT — Grade A