Allium Cepa (onion) Bulb Extract is derived from the onion bulb and contains flavonoids such as quercetin along with sulfur compounds, providing antioxidant and anti-inflammatory properties. It is most commonly studied for its use in topical scar-management formulations.
| Reported effect | How often | Notes |
|---|---|---|
| Mild skin irritation or stinging | Uncommon | Transient irritation, more likely on broken or sensitive skin |
| Allergic contact dermatitis | Rare | Sensitization to onion-derived compounds has been documented |
| Erythema or itching | Uncommon | Localized to application site, usually resolves on discontinuation |
| Contact urticaria | Very rare | Hives reported in individuals with Allium sensitivity |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.