Vitex Agnus Castus (chasteberry) extract is a plant-derived ingredient containing flavonoids, iridoid glycosides and essential oils, used in skincare for antioxidant and soothing properties. It is more widely studied as an oral supplement for hormonal effects than as a topical skincare active.
| Reported effect | How often | Notes |
|---|---|---|
Mild skin irritation or redness | Uncommon | Possible at application site, particularly with sensitive skin. |
Allergic contact dermatitis | Rare | Sensitization to plant constituents in predisposed individuals. |
Photosensitivity | Rare | Reported infrequently with some botanical extracts containing essential oils. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.
Peer-reviewed papers on this ingredient, via PubMed.