A BOTANICAL PROFILE

GET TO KNOW YOUR OILS

Cedar Leaf Thuja (Canada)

Thuja occidentalis L.

Chemotype: alpha-thujone / fenchone type

woodycamphoraceoussharpfresh
PLANT PART
fresh leaves and terminal branches
EXTRACTION
steam distillation
AROMA NOTE
top

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LEARN AS YOU COMPARE

What’s inside this oil?

Constituents are the natural chemicals that give an oil its character. See the main ones, learn what they do, and explore differences between batches.

I’m interested in

Meet the main constituents, then select one to see what makes it interesting.

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FOLLOW YOUR SENSES

Aroma & character

A closer look at this oil's scent, strength, and staying power.

woodycamphoraceoussharpfresh
Aroma intensity
80 / 100
Soft & subtleBold & expressive
Note layer
top

If you like this scent, explore

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A LITTLE CARE GOES A LONG WAY

Using it thoughtfully

Read the full safety context before bringing this oil into your routine.

Cited dermal maximum · leave-on
0.4%
Phototoxicity
Not flagged in this profile
Oxidation risk
medium

A cited maximum is a limit, not a suggested dilution. Missing restrictions do not establish safety.

Nonphototoxic according to the cited supplier safety profile.

Contraindications & cautions

  • majorThuja occidentalis essential oil is contraindicated in pregnancy; its high thujone content is associated with a substantial risk of causing fetal malformation and abortifacient effects.
  • majorUse is not recommended during breastfeeding because of the potential toxicity of the thujone-rich essential oil.
  • majorCaution is advised for people with epilepsy because thujone is a known neurotoxic and convulsant constituent, and this oil is roughly 50% total thujone.
  • majorInternal/oral use of thujone-rich Thuja occidentalis oil is not appropriate for unsupervised use; thujone is neurotoxic, convulsant, and hallucinogenic when ingested, with long-term or excessive exposure linked to restlessness, vomiting, vertigo, tremors, renal damage, and convulsions, and the oil appears in poison guides for this reason.
Read the complete safety guide
Explore measured chemistry from supplier batches

A supplier report describes a particular sample. Open this workspace to investigate measured constituents and their original documents.

THE SCIENCE BEHIND THE SCENT

Inside the oil

20 constituents

An oil's character comes from its natural chemical composition. Explore each constituent to understand the connections.

About this composition

Canadian cedar leaf thuja oil is a thujone-rich leaf and twig oil dominated by alpha-thujone with supporting fenchone and beta-thujone. The published supplier profile explicitly calculates a dermal ceiling from total thujone content, which aligns with secondary aromatherapy safety guidance citing a 0.4% maximum dermal limit.

ConstituentTypical amountReported rangeChemical familySource
alpha-thujone
50.1%
48.7–51.5%monoterpene ketone
View source

Cedar Leaf Thuja Essential Oil Supplier, Manufacturer & Wholesaler

https://www.kusharomaexports.com/essential-oils/cedar-leaf-thuja-essential-oil (Key constituents: a-Thujone 48.7-51.5%)
fenchone
12.5%
12.2–12.8%monoterpene ketone
View source

Cedar Leaf Thuja Essential Oil Supplier, Manufacturer & Wholesaler

https://www.kusharomaexports.com/essential-oils/cedar-leaf-thuja-essential-oil (Key constituents: Fenchone 12.2-12.8%)
beta-thujone
8.9%
7.9–9.9%monoterpene ketone
View source

Cedar Leaf Thuja Essential Oil Supplier, Manufacturer & Wholesaler

https://www.kusharomaexports.com/essential-oils/cedar-leaf-thuja-essential-oil (Key constituents: b-Thujone 7.9-9.9%)
sabinene
3.1%
1.8–4.4%monoterpene hydrocarbon
View source

Cedar Leaf Thuja Essential Oil Supplier, Manufacturer & Wholesaler

https://www.kusharomaexports.com/essential-oils/cedar-leaf-thuja-essential-oil (Key constituents: Sabinene 1.8-4.4%)
bornyl acetate
2.75%
2.3–3.2%monoterpene ester
View source

Cedar Leaf Thuja Essential Oil Supplier, Manufacturer & Wholesaler

https://www.kusharomaexports.com/essential-oils/cedar-leaf-thuja-essential-oil (Key constituents: Bornyl acetate 2.3-3.2%)
camphor
2.35%
2.2–2.5%monoterpene ketone
View source

Cedar Leaf Thuja Essential Oil Supplier, Manufacturer & Wholesaler

https://www.kusharomaexports.com/essential-oils/cedar-leaf-thuja-essential-oil (Key constituents: Camphor 2.2-2.5%)
terpinen-4-ol
2%
1.5–2.5%monoterpene alcohol
View source

Cedar Leaf Thuja Essential Oil Supplier, Manufacturer & Wholesaler

https://www.kusharomaexports.com/essential-oils/cedar-leaf-thuja-essential-oil (Key constituents: Terpinen-4-ol 1.5-2.5%)
beta-myrcene
1.95%
1.8–2.1%monoterpene hydrocarbon
View source

Cedar Leaf Thuja Essential Oil Supplier, Manufacturer & Wholesaler

https://www.kusharomaexports.com/essential-oils/cedar-leaf-thuja-essential-oil (Key constituents: b-Myrcene 1.8-2.1%)
alpha-pinene
1.7%
1.6–1.8%monoterpene hydrocarbon
View source

Cedar Leaf Thuja Essential Oil Supplier, Manufacturer & Wholesaler

https://www.kusharomaexports.com/essential-oils/cedar-leaf-thuja-essential-oil (Key constituents: a-Pinene 1.6-1.8%)
alpha-terpinyl acetate
1.4%
1–1.8%monoterpene ester
View source

Cedar Leaf Thuja Essential Oil Supplier, Manufacturer & Wholesaler

https://www.kusharomaexports.com/essential-oils/cedar-leaf-thuja-essential-oil (Key constituents: a-Terpinyl acetate 1.0-1.8%)
limonene
1.5%
1.4–1.6%monoterpene hydrocarbon
View source

Cedar Leaf Thuja Essential Oil Supplier, Manufacturer & Wholesaler

https://www.kusharomaexports.com/essential-oils/cedar-leaf-thuja-essential-oil (Key constituents: (+)-Limonene 1.4-1.6%)
alpha-fenchene
1.15%
1.1–1.2%monoterpene hydrocarbon
View source

Cedar Leaf Thuja Essential Oil Supplier, Manufacturer & Wholesaler

https://www.kusharomaexports.com/essential-oils/cedar-leaf-thuja-essential-oil (Key constituents: a-Fenchene 1.1-1.2%)
para-Cymene
1.77%
1.77–1.77%monoterpene hydrocarbon
View source

Lotus Garden Botanicals GC/MS Report - Cedarleaf White (Thuja) EO (Canada) THUW724EO1132

https://www.lgbotanicals.com/assets/images/Certificate%20of%20Analysis%20CEDAR%20LEAF%20WHITE%20THUW724EO1132.pdf (page 2, para-cymene 1.77%)
camphene
1.3%
1.3–1.3%monoterpene hydrocarbon
View source

Lotus Garden Botanicals GC/MS Report - Cedarleaf White (Thuja) EO (Canada) THUW724EO1132

https://www.lgbotanicals.com/assets/images/Certificate%20of%20Analysis%20CEDAR%20LEAF%20WHITE%20THUW724EO1132.pdf (page 2, camphene 1.3%)
alpha-thujene
0.46%
0.46–0.46%monoterpene hydrocarbon
View source

Lotus Garden Botanicals GC/MS Report - Cedarleaf White (Thuja) EO (Canada) THUW724EO1132

https://www.lgbotanicals.com/assets/images/Certificate%20of%20Analysis%20CEDAR%20LEAF%20WHITE%20THUW724EO1132.pdf (page 2, alpha-thujene 0.46%)
linalyl acetate
0.58%
0.58–0.58%monoterpene ester
View source

Lotus Garden Botanicals GC/MS Report - Cedarleaf White (Thuja) EO (Canada) THUW724EO1132

https://www.lgbotanicals.com/assets/images/Certificate%20of%20Analysis%20CEDAR%20LEAF%20WHITE%20THUW724EO1132.pdf (page 3, linalyl acetate 0.58%)
alpha-terpineol
0.36%
0.36–0.36%monoterpene alcohol
View source

Lotus Garden Botanicals GC/MS Report - Cedarleaf White (Thuja) EO (Canada) THUW724EO1132

https://www.lgbotanicals.com/assets/images/Certificate%20of%20Analysis%20CEDAR%20LEAF%20WHITE%20THUW724EO1132.pdf (page 3, alpha-terpineol 0.36%)
endo-fenchyl acetate
0.41%
0.41–0.41%monoterpene ester
View source

Lotus Garden Botanicals GC/MS Report - Cedarleaf White (Thuja) EO (Canada) THUW724EO1132

https://www.lgbotanicals.com/assets/images/Certificate%20of%20Analysis%20CEDAR%20LEAF%20WHITE%20THUW724EO1132.pdf (page 3, endo-fenchyl acetate 0.41%)
thujyl acetate
0.43%
0.43–0.43%monoterpene ester
View source

Lotus Garden Botanicals GC/MS Report - Cedarleaf White (Thuja) EO (Canada) THUW724EO1132

https://www.lgbotanicals.com/assets/images/Certificate%20of%20Analysis%20CEDAR%20LEAF%20WHITE%20THUW724EO1132.pdf (page 4, thujyl acetate 0.43%)
beyerene
0.58%
0.58–0.58%diterpene hydrocarbon
View source

Lotus Garden Botanicals GC/MS Report - Cedarleaf White (Thuja) EO (Canada) THUW724EO1132

https://www.lgbotanicals.com/assets/images/Certificate%20of%20Analysis%20CEDAR%20LEAF%20WHITE%20THUW724EO1132.pdf (page 4, beyerene 0.58%)

Profile source: Cedar Leaf Thuja Essential Oil Supplier, Manufacturer & Wholesaler; Canadian Essential Oils for Respiration · https://www.kusharomaexports.com/essential-oils/cedar-leaf-thuja-essential-oil ; https://www.cfacanada.com/blogs/news/canadian-essential-oils-for-respiration

A TRADITION OF BOTANICAL CURIOSITY

Traditional & reported uses

These uses reflect the profile's reported traditions and literature. They are not established treatment recommendations.

  • shares the traditional folk herbal reputation of thuja/cedar leaf oils for topical and respiratory comfort, used cautiously
  • used in perfumery for a fresh, camphoraceous, resinous coniferous note
  • reported use in forest-themed diffuser blends for a crisp, green atmosphere
  • traditionally associated with North American Indigenous and folk plant-use traditions
  • reported use in small amounts within woody-green fragrance accords

For aromatherapy and wellness use only — not medical advice. Effect statements are traditional/reported associations, not treatment claims. The Synergy Rating scores blend craft, harmony and safety, not medical efficacy. Read the safety framework.

What we're still learning · 1 data gaps

Good decisions start with knowing what is — and isn't — in the evidence.

  • No public source located in this pass provided normalized volatility-rate or tenacity-hour values for Thuja occidentalis leaf oil.