Thuja Occidentalis (white cedar) leaf extract is a plant-derived ingredient containing thujone and tannins, used in skincare for its astringent, antiseptic, and traditionally wart-treating properties. It is sometimes included for its purported antimicrobial and skin-conditioning effects.
| Reported effect | How often | Notes |
|---|---|---|
Skin irritation or contact dermatitis | Uncommon | Topical application may cause redness, itching, or irritation, particularly on sensitive skin. |
Allergic sensitization | Rare | Some individuals may develop allergic contact reactions to thuja constituents. |
Photosensitivity | Rare | Occasional reports of increased sensitivity to sunlight following topical use. |
Systemic toxicity from thujone | Very rare | Thujone is neurotoxic if ingested or applied in high concentrations; topical cosmetic use at regulated levels is generally low risk. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.