Cinnamal (cinnamaldehyde) cinnamon se aane wala ek natural aromatic aldehyde hai jo cosmetic products mein fragrance aur flavoring ke liye use hota hai. Yeh ek known contact allergen hai aur 26 fragrance allergens mein se ek hai, toh sensitive skin wale log ko dhyan rakhna chahiye kyunki isse irritation ho sakta hai.