- Pseudotsuga menziesii (Mirbel) Franco (syn. P. douglasii, P. taxifolia, Abies menziesii), Pinaceae — steam distillate from wood / oleoresin collected from felled trees per Burfield 2000. NOT a true fir (Pseudotsuga genus ≠ Abies genus).
- Hazards: Skin sensitization if oxidized. Cautions: Old or oxidized oils should be avoided. (T&Y verbatim p.582).
- Max dermal — framework default 5.0% adult (8% on 25 volunteers non-irritating/non-sensitizing per Opdyke 1979b supports framework cap). Non-phototoxic (Pinaceae wood steam distillate, no furocoumarin pathway). LD50 > 5 g/kg both oral + dermal.
- PINACEAE AUTOXIDATION CLASS RAIL (CRITICAL) — α-pinene 13.0% + β-pinene 11.6% + terpinolene 9.1% + camphene 16.7% monoterpene-hydrocarbon pool → autoxidation → peroxide formation → moderate sensitization potential. SCCNFP 2001a + IFRA 2009 antioxidant mandate at production (BHT 0.1% or α-tocopherol). Dark+airtight+refrigerator storage mandatory.
- Key rails: NOT-TRUE-FIR disambiguation (Pseudotsuga menziesii ≠ Abies genus 6 true-fir species in B216); fir-family umbrella (B216 covers 7 variants — Douglas + silver cones + Canadian + Himalayan + Japanese + Siberian + silver needle — requires slug disambiguation); wood-oleoresin-distillate rail (NOT needle-distillate — Abies needle oils have different chemistry); Pinaceae-autoxidation peer class [[pine-scots]]/[[cypress]]/[[juniper-berry]]/[[frankincense-carterii]]/[[ferula]].
Tổng Quan
- Danh pháp khoa học
- Pseudotsuga menziesii (Mirbel) Franco
- Họ thực vật
- Pinaceae
- Bộ phận dùng
- Wood (oleoresin from felled trees)
- Phương pháp chiết xuất
- steam_distillation
- Màu sắc
- —
- Phân loại nốt hương
- Nốt Top/Middle
- Hương thơm
- —
- Chemotype / Cultivar
- —
Tình trạng tại Việt Nam
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Phân loại nốt
Top-Middle
Cường độ
3/5
Độ bền trên da
2–4 giờ
Họ hương
Fresh-coniferous-woody with sweet-balsamic bornyl-acetate signature and green-terpenic lift
Hương đầu (Opening)(0–15 phút)
Crisp old-growth forest air after rain, sun-warmed dry resin on bark, sweet balsamic pine needle bed, cool camphoraceous shadow, vast grounding wilderness silence
Hương giữa (Heart)(15–60 phút)
Không khí rừng già trong lành sắc mát, nhựa thông khô ấm dưới ánh nắng, ngọt dịu như thảm lá kim trải mềm, thoảng lạnh phấn nhựa the mát, tĩnh tại như lòng rừng nguyên sinh
Hương nền (Drydown)(1–4 giờ)
2–4 giờ
Cường độ hương
3/5
Da khô
3/5
Da dầu/mụn
3/5
Da lão hóa
3/5
Da thường
4/5
Da nhạy cảm
2/5
Da hỗn hợp
3/5
Nhập khẩuImported
Tên gọi tại Việt Nam
Tinh dầu Linh Sam Douglas (Douglas Fir)
Pha Chế & Hòa Hợp
expectorant / mucolytic
α-Pinene and β-pinene (principal Pinaceae monoterpene hydrocarbons, Kubeczka & Schultze 1987) loosen bronchial secretions via ciliary stimulation and mild mucosal irritation, supporting expectoration in upper-respiratory congestion.
Ref: class-extrapolation from Pinaceae conifer class (fir-needle, spruce); Tisserand & Young 2014, Ch.13 p.582
anti-inflammatory (topical)
α-Pinene inhibits NF-κB-mediated prostaglandin synthesis in a concentration-dependent manner; supported by Pinaceae class-wide constituent profiling (Kubeczka & Schultze 1987).
Ref: class-extrapolation from Pinaceae conifer class; Tisserand & Young 2014, Ch.13 p.582
antimicrobial (broad-spectrum)
Monoterpene hydrocarbon-dominant profile (α/β-pinene) disrupts bacterial cell-membrane integrity; mechanism established for Pinaceae class constituents via constituent chemistry (Kubeczka & Schultze 1987).
Ref: class-extrapolation from Pinaceae conifer class; Kubeczka & Schultze 1987 (chemistry basis)
anxiolytic / grounding (inhalation)
Volatile monoterpenes absorbed via olfactory pathway modulate limbic-system activity; woody-resinous aromatic profile traditionally associated with grounding and psychological stress reduction in conifer-forest aromatherapy contexts.
Ref: class-extrapolation from Pinaceae conifer class; Tisserand & Young 2014, Ch.13 p.582
analgesic / counterirritant (topical)
α-Pinene acts as a counterirritant on cutaneous nociceptors, providing transient warmth and local pain attenuation when applied topically at therapeutic dilutions of 1–5%.
Ref: class-extrapolation from Pinaceae conifer class; Opdyke DLJ 1979b (non-irritating safety baseline at 8%)
antifungal
Pinene-class monoterpene hydrocarbons impair fungal ergosterol synthesis and hyphal membrane integrity; supporting class evidence from Pinaceae EOs with dominant α-pinene profiles (Kubeczka & Schultze 1987).
Ref: class-extrapolation from Pinaceae conifer class; Kubeczka & Schultze 1987 (chemistry basis)
AI-summary
Traditional aromatherapy use; no RCT-grade clinical evidence located. Available §13 citations cover safety toxicology (Opdyke 1979b: 8% patch test on 25 volunteers — non-irritating, non-sensitizing; LD50 data supportive of low acute toxicity) and Pinaceae class peroxide-safety regulation (SCCNFP 2001a; IFRA 2009; Karlberg et al 1992 — turpentine α-pinene peroxide contact dermatitis class). Therapeutic claims rest on constituent-class extrapolation from the α/β-pinene profile (Kubeczka & Schultze 1987) and well-studied Pinaceae conifer EOs (fir-needle, spruce). No published human clinical trials specific to Pseudotsuga menziesii wood oleoresin EO were identified in available citations.
NarrativeTâm trạng: Uplifting, Grounding
clarityresiliencevitalityfocustranquilityfreedom
Chakra
root
Ngũ hành
moc
| Phương pháp | Liều lượng | Ghi chú |
|---|---|---|
| Diffusion | 3–5 drops in 100 ml water, diffuse 30–60 min | Primary use: respiratory support and emotional grounding. Woody-resinous scent suits meditation or workspace. Ventilate room; avoid continuous diffusion >1 h around infants or asthmatics. |
| Topical massage | 1–5% in carrier oil (max 5% adult, T&Y) | Prefer 1–2% general use; 5% cap adults only. Use fresh/antioxidant-stabilised oil (IFRA 2009 mandate) — oxidised oil risks sensitisation. Carrier: jojoba or sweet almond. |
| Steam inhalation | 2–3 drops in bowl of hot (not boiling) water | Inhale under towel tent for 5–10 min for upper-respiratory congestion. Keep eyes closed. Do not use during active asthma attacks. |
| Compress (warm) | 2–3 drops pre-diluted in 1 tsp jojoba, added to 200 ml warm water | Apply cloth compress to chest or upper back for musculoskeletal aches or respiratory support. Pre-dilute in dispersant before adding to water to prevent direct skin contact. |
Dầu nền phù hợp
JojobaExtremely stable liquid wax with minimal oxidation rate; pairs safely with Pinaceae EOs requiring antioxidant-stable bases, reducing peroxide accumulation risk and extending blend shelf life.
Sweet AlmondLight emollient with a neutral-to-slightly-nutty scent that complements Douglas Fir's woody-resinous profile without competing; well-suited for massage applications.
Fractionated CoconutOdourless, long shelf life, and rapid skin absorption make it neutral and practical for topical analgesic or massage blends where scent clarity is desired.
RosehipRich in linoleic acid and carotenoids; pairs with anti-inflammatory monoterpene class for mature-skin nourishing synergy. Use at ≤20% proportion due to its own oxidation rate.
Kết hợp tốt với
WoodyResinousCamphoraceousSpicyEarthy
Blend kinh điển
—
—
—
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[Tisserand & Young] Ch.13 p.582 (Fir, Douglas)
[Kubeczka KH, Schultze W] chemistry profile (cited in T&Y)
[Opdyke DLJ] 8% on 25 volunteers non-irritating/non-sensitizing; LD50 data (cited in T&Y)
[Burfield T] wood oleoresin sourcing rail
[SCCNFP 2001a] pine oil peroxide value opinion
[IFRA] Pinaceae class antioxidant addition mandate
[Karlberg AT et al] turpentine α-pinene peroxide contact dermatitis class
An Toàn
Giới hạn da tối đa
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Giới hạn IFRA
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Thai kỳ & Cho con bú
Tam cá nguyệt 1Unknown
Tam cá nguyệt 2Unknown
Tam cá nguyệt 3Unknown
Giới hạn độ tuổi
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Bảo quản
Bảo quản nơi tối, mát