TRIMETHYLENE ASCORBATE is graded A (Safe) by Expert·ING, based on COSING regulatory data.

TRIMETHYLENE ASCORBATE

Safety grade: A

A vitamin C derivative that brightens skin and helps reduce the appearance of dark spots and dullness. This ingredient is designed to be more stable than regular vitamin C, allowing it to penetrate the skin effectively and support a more even complexion over time.

Graded using: COSING.

Last verified: June 9, 2026