Skincare that makes sense. See what's really in your products — in plain English.

For informational purposes only — not medical advice. Always consult a dermatologist for skin concerns.

Terpinen-4-ol

1% line markerAI-analyzed

INCI: 4-TERPINEOL

fragrance ingredientantimicrobial agentsoothing agent

What it does

A natural monoterpene alcohol, a major active component of Tea Tree Oil, known for its antimicrobial and anti-inflammatory properties.

Beneficial for

acnerednesssensitivity

May aggravate

sensitivity

Safety summary

Generally considered safe, but can be irritating in high concentrations or to sensitive skin. Potential for sensitization with oxidized forms.

CAS Number

562-74-3

1% line marker

This ingredient is commonly used as a marker to identify where ingredients drop below 1% concentration on the label.

For informational purposes only. This is not medical advice. Always patch test new products and consult a dermatologist for skin concerns.

Terpinen-4-ol — Skincare Ingredient Guide — Dermasift — Dermasift