Chamaecyparis Obtusa (Japanese cypress, Hinoki) Leaf Extract is a plant-derived ingredient rich in essential oils and polyphenols, valued for its antioxidant, anti-inflammatory, and antimicrobial properties in skincare formulations. It is also used for its aromatic qualities and potential sebum-regulating effects.
| Reported effect | How often | Notes |
|---|---|---|
| Contact dermatitis / skin irritation | Uncommon | May occur in sensitive individuals due to volatile essential oil components. |
| Allergic contact sensitization | Rare | Cypress and conifer-derived terpenes can act as allergens in predisposed individuals. |
| Photosensitivity reactions | Very rare | Limited reports; relevance is largely theoretical for 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.