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

4-TERPINEOL

Terpinen-4-ol

Safety grade: A

Terpinen-4-ol is a natural compound found in tea tree oil and other plants that has a fresh, earthy scent. It is commonly used in cosmetics for its pleasant aroma and skin-soothing properties.

This ingredient is used in cosmetic products to mask or cover up unpleasant odors from other ingredients, helping to make the product smell more appealing.

Graded using: COSING.

Last verified: May 26, 2026