THUJA PLICATA WOOD WATER
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
Western red cedar water with thujone compounds and potential toxicity concerns requiring careful formulation consideration.
Thuja plicata (western red cedar or giant arborvitae) wood water is a steam distillate containing thujone, thujic acid, and other diterpenoids characteristic of thuja species. The plant contains compounds that have raised toxicological concerns in the scientific literature, particularly related to neurological effects of thujone at high doses. The steam-distilled water form represents a significantly diluted preparation compared to essential oil, but the ingredient warrants caution in cosmetic formulation. It is not specifically listed in EU Annexes II or III of Regulation 1223/2009, though the thujone content should be monitored for compliance with general safety requirements.
Skin benefits
- Astringent properties
- Traditional medicinal use
- Antimicrobial support
- Fragrance component
Known concerns
- Thujone content raises neurological toxicity concerns at high doses
- Limited safe concentration data for cosmetic use
- May contain cupressaceae allergens
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.