INCI name

ALPHA-TERPINENE

Alpha-terpinene

Perfumingreviewed

A monoterpene fragrance substance regulated in Annex III.

What it is

Alpha-terpinene (p-mentha-1,3-diene) is a monoterpene hydrocarbon that occurs in many essential oils. CosIng lists it as a perfuming ingredient. In the EU it is covered by an entry in Annex III (substances subject to restrictions) as a fragrance allergen.

Where it is used

Found in perfumed products and in products containing essential oils.

Limits of interpretation

The INCI list shows which ingredients are present, not how much of each. Above 1%, ingredients are listed in descending order of weight; below 1% the order is free.

See the EU regulation section for the applicable limits. It may appear on the label because it is present in an essential oil, not as a separately added ingredient.

Functions

Perfuming
Used for perfume and aromatic raw materials.

EU regulation

EU · Annex III, entry 131p-Mentha-1,3-diene
As of
3 November 2026 · (EU) 2023/1545

Products with this ingredient (45)

Check a full ingredient list