Fragrance

Cinnamal

INCI: CINNAMAL

Reviewed by Rosie · Last updated 18 Aug 2026

A fragrance component with limited skincare evidence and potential for contact sensitivity

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What Is Cinnamal?

Cinnamal is an organic compound derived from cinnamon oil and other natural sources. In cosmetics, it functions primarily as a fragrance ingredient and denaturant (a substance added to make a product unsuitable for ingestion).

Within skincare formulations, cinnamal is used in small amounts to contribute to the scent profile of a product. It is present in approximately 0.4% of skincare products on the market.

How It Works

Cinnamal operates primarily as a fragrance agent, dispersing in the formulation to provide sensory appeal. The compound has been studied in other contexts for antioxidant potential, which relates to its chemical structure containing conjugated double bonds that can neutralise free radicals. However, the concentrations used in skincare products are typically too low to deliver meaningful antioxidant benefit to the skin.

Clinical Evidence & References

Direct clinical evidence for cinnamal's efficacy in skincare is sparse. Most research into cinnamal's biological activity comes from non-skincare contexts or uses concentrations higher than those found in cosmetics. The ingredient is included in formulations primarily for fragrance rather than therapeutic benefit.

Broader research on antioxidant compounds suggests that protection against oxidative stress can support skin health, but there is no robust evidence specific to cinnamal in topical skincare applications at cosmetic-use concentrations.

How to Use

Cinnamal is used by formulators rather than consumers—you do not select it directly. If a product lists it in the INCI declaration, it will be present in the formulation as part of the fragrance system. Use the product as directed by the brand, and discontinue if you notice any signs of irritation.

Safety & Precautions

Cinnamal is listed as a potential allergen under EU regulations and is a known contact sensitiser for some individuals. Those with fragrance sensitivity, cinnamon allergy, or a history of contact dermatitis should avoid products containing it.

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