Lemon extract is a citrus-derived ingredient rich in vitamin C, citric acid, and flavonoids, used in skincare for its antioxidant, mild exfoliating, and skin-brightening properties. It is also valued as a natural astringent and fragrance component.
| Reported effect | How often | Notes |
|---|---|---|
| Skin irritation (redness, stinging) | Common | Acidic pH and citric acid content can irritate sensitive or compromised skin. |
| Phototoxicity/photosensitivity | Uncommon | Furocoumarins in citrus may cause phytophotodermatitis with sun exposure. |
| Allergic contact dermatitis | Uncommon | Limonene and citrus allergens can trigger sensitization in predisposed individuals. |
| Hyperpigmentation or hypopigmentation | Rare | Most often secondary to phototoxic reactions or post-inflammatory changes. |
| Chemical burn | Rare | Reported with high-concentration or undiluted topical application. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.