TRONA is graded A (Safe) by Expert·ING, based on COSING regulatory data.
TRONA
Safety grade: A
Trona is a naturally occurring mineral salt that is mined from mineral deposits. It acts as a pH buffer and gentle cleanser in skincare products.
Trona protects skin by neutralizing acids and free radicals while helping to maintain the skin's natural pH balance, reducing irritation and supporting the skin's protective barrier.
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