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

HYDROXYTRYPTOPHAN

5-HTP

Safety grade: A

5-HTP is an amino acid compound that your body naturally produces, which helps regulate mood and stress responses. In skincare, it's used to help calm and condition the skin.

This ingredient helps soothe and condition the skin by supporting the skin's natural stress-response system, promoting a calmer and more balanced complexion.

Graded using: COSING.

Last verified: May 26, 2026