The ingredient, explained

Limonene

A published expert assessment examines cosmetic-use safety.

DeodorantPerfumingSolvent

Explore connections

Ingredient guide

What it is and what it does

1-Methyl-4-Isopropenylcyclohexene; dipentene

About this ingredient: EU CosIng ingredient registry (via Open Beauty Facts taxonomy) ↗

Deodorant: Helps reduce or mask unwanted body odour.
Perfuming: A formulation role for perfume and aromatic raw materials that give a product its scent.
Solvent: Dissolves other ingredients in a formula.

Function definitions: European Commission ingredient function definitions (SCCNFP/0299/00, pages 16 to 20) ↗ · Danish Environmental Protection Agency: Cosmetic fragrance functions ↗

Registry functions describe possible formulation roles, not results for a finished product. A dictionary entry is not an approval or a safety assessment.

A closer look

What the research shows

Safety assessment

The assessment addresses the racemic limonene identity and distinguishes unoxidized material from its oxidation products.

What this does not tell us

Read-across, exposure assumptions and oxidation state constrain interpretation. It is not a skincare efficacy study or assurance of tolerability for an oxidized product.

Sources for this summary. PubMed 34896183 ↗

Research review checked Oct 1, 2026

Bounded review of 8 local candidate records, selected relevant abstracts, and targeted exact-name primary-source searches. Not a systematic review.

Ingredient research is not proof that a product containing this ingredient works.