Ingredient dictionary
Eucalyptol
Also listed as: 1,8-Cineole, Cineole
Eucalyptol is a natural compound from a group of plant chemicals called terpenes. In beauty products, it is mainly used to give a cool, herbal scent. Checked against our library November 6, 2026.
- Essential oils. Essential oils carry the same fragrance allergens as perfume. "Fragrance-free" labels can still contain them.
What Eucalyptol does
- Adds a fresh, herbal scent
- Gives a cool, camphor-like aroma
- Rounds out fragrance blends
Eucalyptol is a natural compound from a group of plant chemicals called terpenes. It is a major part of eucalyptus leaf oil and also appears in plants such as rosemary, sage and bay. Cosmetic supplies are often made from these plant oils.
In products, eucalyptol is valued for its clean, cool, camphor-like scent. Formulators use it in small amounts to add freshness and to round out fragrance blends. It is a clear liquid that evaporates fairly quickly, so its scent is noticed mostly during and just after use.
Good for
Suits anyone who likes fresh, herbal scents in their skincare, haircare or makeup.
Frequently asked questions
Is eucalyptol the same as eucalyptus oil?
Not exactly. Eucalyptus oil is a mix of many plant compounds, and eucalyptol is one of the main ones in it. Products that list eucalyptol are naming that single compound, not the whole oil.
Is eucalyptol safe for sensitive skin?
It is usually used in small amounts and is generally well tolerated. Like any fragrance ingredient, it can bother a few people. If your skin reacts to scented products, try a fragrance-free option and patch test first.