Science
Mechanism of Action
This wood extract functions through its rich content of polyphenols, such as flavonoids and stilbenes, which are known to neutralize free radicals, thereby providing antioxidant defense. Additionally, constituents like pinene, found in the plant's essential oils, contribute to its reported anti-inflammatory, antiseptic, and astringent effects, supporting overall skin health and purification.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 Research indicates that Pseudotsuga Menziesii wood contains polyphenols, including flavonoids, lignans, and stilbenes, which have demonstrated antioxidant, antibacterial, and anti-inflammatory activities.
- 02 Essential oil components like pinene are associated with anti-inflammatory, antioxidant, and antiseptic actions.
- 03 A study evaluating antimicrobial effects of Douglas fir wood extracts prepared with biocompatible solvents (distilled water, glycerin, and DMSO) at a 5% v/v concentration found these effects to be negligible against skin-related microbes.
- 04 Separately, Douglas fir essential oil exhibited significant antifungal activity with minimum inhibitory concentrations (MIC) ranging from 1.5 to 4 µg mL-1 against various fungal species.
Transparency
Dusting Analysis
Given the broad claims of antioxidant and anti-inflammatory properties stemming from general plant compounds, alongside a specific finding of negligible antimicrobial effects at 5% v/v for the wood extract, this ingredient carries a risk of being included in formulations primarily for its 'natural' appeal without robust, concentration-specific efficacy data for direct skin benefits.
The Formula
Formulation
Stability
Optimal pH for the stability of the cosmetic extract is not explicitly detailed. However, Douglas fir thrives in a soil pH range of 5.0 to 6.0, and plant tissue cultures sometimes utilize a stable pH of 5.5, which may facilitate nutrient uptake.
Safety
Safety Profile
There is currently no specific Cosmetic Ingredient Review (CIR), SCCS, or FDA safety status readily available. While handling raw Douglas fir wood has been associated with reports of skin irritation, INCIDecoder rates the cosmetic wood extract with low irritancy and comedogenicity, suggesting a low risk in topical formulations.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Pseudotsuga Menziesii Wood Extract offers antioxidant and perfuming qualities due to its polyphenol content, positioning it as an optional ingredient, though more precise efficacy data for specific skin benefits at relevant cosmetic concentrations would enhance its profile.
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