Hieracium pilosella (mouse-ear hawkweed) extract is a plant-derived ingredient used in skincare for its astringent, antioxidant, and soothing properties, often included in toners and products targeting oily or sensitive skin. It contains flavonoids and tannins thought to help tone and calm the skin.
| Reported effect | How often | Notes |
|---|---|---|
Contact irritation | Rare | Mild redness or stinging possible, particularly on sensitive skin. |
Allergic contact dermatitis | Rare | Possible sensitization, as with many Asteraceae-family botanicals. |
Cross-reactivity in Asteraceae-sensitive individuals | Very rare | Those allergic to ragweed, daisies, or chrysanthemums may react. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.