Yarrow (Achillea millefolium) extract is a plant-derived ingredient used in skincare for its anti-inflammatory, antioxidant, and astringent properties, often included to calm irritation and support skin barrier function. It contains flavonoids, sesquiterpene lactones, and volatile oils.
| Reported effect | How often | Notes |
|---|---|---|
Allergic contact dermatitis | Uncommon | Linked to sesquiterpene lactones; more likely in individuals sensitive to Asteraceae/Compositae plants (e.g., ragweed, chamomile, daisy). |
Skin irritation or redness | Uncommon | May occur with higher concentrations or on sensitive/compromised skin. |
Photosensitivity | Rare | Some reports associate yarrow constituents with increased sun sensitivity. |
Cross-reactivity in Asteraceae-allergic individuals | Uncommon | Those with known plant allergies in this family are at elevated risk of reaction. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.