The ingredient, explained

Citral

Citral has published research relevant to the stated experimental context.

FlavouringPerfuming

Explore connections

Ingredient guide

What it is and what it does

2‚6-Octadienal, 3‚7-dimethyl-; 3‚7-Dimethyl-2‚6-octadienal

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

Flavouring: Adds or modifies a product's flavour, including in oral-care products such as toothpaste.
Perfuming: A formulation role for perfume and aromatic raw materials that give a product its scent.

Function definitions: European Commission JRC: Flavouring roles in toothpaste formulations ↗ · 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

Human contact allergy research

Among 367 fragrance-mix-II-positive patients who received full constituent breakdown testing, 16.1% reacted to CITRAL.

What this does not tell us

This is a selected subgroup of patients undergoing dermatitis evaluation. It does not estimate prevalence among all cosmetic users or demonstrate skin efficacy.

Sources for this summary. PubMed 20946454 ↗

Research review checked Oct 1, 2026

Selective exact-identity review of 2 supplied local candidates and the targeted primary-source search recorded below. Bounded review, not a systematic search.