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

TIOXOLONE

Safety grade: A

Tioxolone is a synthetic chemical compound that helps tighten and firm the skin. It works by temporarily contracting skin tissue to create a smoother, more refined appearance.

This astringent ingredient is used in cosmetics to tighten pores, reduce the appearance of oiliness, and create a firming effect on the skin's surface.

Graded using: COSING.

Last verified: May 26, 2026