Cinnamomum bark extract is a plant-derived ingredient rich in cinnamaldehyde and polyphenols, used in skincare for its antioxidant, antimicrobial, and mild astringent properties. It is sometimes included for its purported anti-inflammatory and skin-conditioning effects.
| Reported effect | How often | Notes |
|---|---|---|
Skin irritation | Common | Cinnamaldehyde content can cause redness, stinging, or burning, particularly on sensitive skin. |
Allergic contact dermatitis | Uncommon | Cinnamic compounds are recognized contact allergens and can trigger sensitization. |
Contact urticaria | Rare | Localized hives may develop shortly after application in susceptible individuals. |
Photosensitivity | Rare | Some reports of increased sun sensitivity following topical exposure. |
Perioral dermatitis or mucosal reactions | Very rare | Reported mainly with lip or oral-care products containing cinnamon derivatives. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.