Ingredient guide ›

Hexyl Cinnamal

A soft floral scent.

What it does

Adds a light, jasmine-like smell to fragrances.

Good to know

It's one of the EU's listed fragrance allergens, so it must be named on the label above 0.001% in leave-on and 0.01% in rinse-off products. Sensitive skin may react.

Often found in: Shampoos, Shower gels, Deodorants

Around the world

• United States: No label rule yet. A 2022 law told the FDA to require fragrance allergen labels, but that rule isn't out. Source
• EU and UK: Must be named on the label above 0.001% in leave-on and 0.01% in rinse-off products. Source
• Canada: Must be named on the label above 0.001% in leave-on and 0.01% in rinse-off products (since April 2026). Source
• Australia: No limit in Australia's Poisons Standard. Source

Sources

• SCCS opinion: Fragrance allergens in cosmetic products (2012) (Independent)
• RIFM safety assessment: alpha-hexylcinnamaldehyde (2026) (Industry-funded)