Hiba Japanese Cedarwood

Thujopsis dolabrata

Chemotype: thujopsene / epicedrol type

woodydryfreshresinousslightly citrusysmoky

PLANT PART: wood
EXTRACTION: steam distillation
AROMA NOTE: base

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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.

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FOLLOW YOUR SENSES

Aroma & character

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

woodydryfreshresinousslightly citrusysmoky

Aroma intensity: 72 / 100

Soft & subtleBold & expressive

Note layer: base
Approximate tenacity: 72–168 hours

If you like this scent, explore

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: 44.66%
Phototoxicity: Not flagged in this profile
Oxidation risk: low

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

No furocoumarin-related phototoxic restriction was identified in the reviewed Thujopsis dolabrata wood-oil sources.

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

17 constituents

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

About this composition

This Hiba profile is based on a directly readable GC-MS study of Aomori hiba wood-chip essential oil and a current supplier information pack for Thujopsis dolabrata wood oil. The published steam-distilled wood oil is sesquiterpene-dominant, led by thujopsene and epicedrol, with smaller cuparene and himachalene fractions.

Constituent	Typical amount	Reported range	Chemical family	Source
Thujopsene	35.6%	35.6–35.6%	sesquiterpene hydrocarbon	View source Phytoconstituent profile and biological activity of wood chips of Aomori Hiba (Thujopsis dolabrata SIEB. et ZUCC. var. hondai MAKINO) https://hirosakiuhw.repo.nii.ac.jp/record/184/files/HirosakiIryoFukushi_10%281%29_15.pdf (Table 1; p.16-17 text: thujopsene 35.6%)
Epicedrol	15.9%	15.9–15.9%	sesquiterpene alcohol	View source Phytoconstituent profile and biological activity of wood chips of Aomori Hiba (Thujopsis dolabrata SIEB. et ZUCC. var. hondai MAKINO) https://hirosakiuhw.repo.nii.ac.jp/record/184/files/HirosakiIryoFukushi_10%281%29_15.pdf (Table 1; p.16-17 text: epi-cedrol 15.9%)
Cuparene	5.1%	5.1–5.1%	sesquiterpene hydrocarbon	View source Phytoconstituent profile and biological activity of wood chips of Aomori Hiba (Thujopsis dolabrata SIEB. et ZUCC. var. hondai MAKINO) https://hirosakiuhw.repo.nii.ac.jp/record/184/files/HirosakiIryoFukushi_10%281%29_15.pdf (Table 1: cuparene 5.1%)
gamma-Himachalene	3.5%	3.5–3.5%	sesquiterpene hydrocarbon	View source Phytoconstituent profile and biological activity of wood chips of Aomori Hiba (Thujopsis dolabrata SIEB. et ZUCC. var. hondai MAKINO) https://hirosakiuhw.repo.nii.ac.jp/record/184/files/HirosakiIryoFukushi_10%281%29_15.pdf (Table 1: gamma-himachalene 3.5%)
beta-Bisabolol	2.1%	2.1–2.1%	sesquiterpene alcohol	View source Phytoconstituent profile and biological activity of wood chips of Aomori Hiba (Thujopsis dolabrata SIEB. et ZUCC. var. hondai MAKINO) https://hirosakiuhw.repo.nii.ac.jp/record/184/files/HirosakiIryoFukushi_10%281%29_15.pdf (Table 1: beta-bisabolol 2.1%)
beta-Sesquiphellandrene	1.4%	1.4–1.4%	sesquiterpene hydrocarbon	View source Phytoconstituent profile and biological activity of wood chips of Aomori Hiba (Thujopsis dolabrata SIEB. et ZUCC. var. hondai MAKINO) https://hirosakiuhw.repo.nii.ac.jp/record/184/files/HirosakiIryoFukushi_10%281%29_15.pdf (Table 1: beta-sesquiphellandrene 1.4%)
alpha-Cedrene	0.7%	0.7–0.7%	sesquiterpene hydrocarbon	View source Phytoconstituent profile and biological activity of wood chips of Aomori Hiba (Thujopsis dolabrata SIEB. et ZUCC. var. hondai MAKINO) https://hirosakiuhw.repo.nii.ac.jp/record/184/files/HirosakiIryoFukushi_10%281%29_15.pdf (Table 1: alpha-cedrene 0.7%)
beta-Cedrene	0.4%	0.4–0.4%	sesquiterpene hydrocarbon	View source Phytoconstituent profile and biological activity of wood chips of Aomori Hiba (Thujopsis dolabrata SIEB. et ZUCC. var. hondai MAKINO) https://hirosakiuhw.repo.nii.ac.jp/record/184/files/HirosakiIryoFukushi_10%281%29_15.pdf (Table 1: beta-cedrene 0.4%)
Terpinen-4-ol	0.5%	0.5–0.5%	monoterpene alcohol	View source Phytoconstituent profile and biological activity of wood chips of Aomori Hiba (Thujopsis dolabrata SIEB. et ZUCC. var. hondai MAKINO) https://hirosakiuhw.repo.nii.ac.jp/record/184/files/HirosakiIryoFukushi_10%281%29_15.pdf (Table 1: terpinen-4-ol 0.5%)
Carvacrol	0.5%	0.5–0.5%	phenol	View source Phytoconstituent profile and biological activity of wood chips of Aomori Hiba (Thujopsis dolabrata SIEB. et ZUCC. var. hondai MAKINO) https://hirosakiuhw.repo.nii.ac.jp/record/184/files/HirosakiIryoFukushi_10%281%29_15.pdf (Table 1: carvacrol 0.5%)
alpha-Selinene	0.1%	0.1–0.1%	sesquiterpene hydrocarbon	View source Phytoconstituent profile and biological activity of wood chips of Aomori Hiba (Thujopsis dolabrata SIEB. et ZUCC. var. hondai MAKINO) https://hirosakiuhw.repo.nii.ac.jp/record/184/files/HirosakiIryoFukushi_10%281%29_15.pdf (Table 1: alpha-selinene 0.1%)
tau-Cadinol	1.1%	1.1–1.1%	sesquiterpene alcohol	View source Phytoconstituent profile and biological activity of wood chips of Aomori Hiba (Thujopsis dolabrata SIEB. et ZUCC. var. hondai MAKINO) https://hirosakiuhw.repo.nii.ac.jp/record/184/files/HirosakiIryoFukushi_10%281%29_15.pdf (Table 1: beta-cadinol 1.1%, mapped to tau-cadinol/epi-alpha-cadinol shared CAS 5937-11-1)
Cadinene isomers	0.8%	0.8–0.8%	sesquiterpene hydrocarbons	View source Phytoconstituent profile and biological activity of wood chips of Aomori Hiba (Thujopsis dolabrata SIEB. et ZUCC. var. hondai MAKINO) https://hirosakiuhw.repo.nii.ac.jp/record/184/files/HirosakiIryoFukushi_10%281%29_15.pdf (Table 1: beta-cadinene 0.8%, unresolved isomer mapped to generic cadinene-isomers entry)
Cedrol	7.5%	5–10%	sesquiterpene alcohol	View source MADAR Corporation HIBA WOOD OIL - REACH composition table (Section 3.1) https://www.madarcorporation.com/spec-sheets/essential-oil/hiba-wood/Hiba%20Wood%20-%204593305-All%20docs.pdf (Section 3.1 composition table: Cedrol CAS 77-53-2, 5-<10%)
Citronellol	1.5%	1.5–1.5%	monoterpene alcohol	View source MADAR Corporation HIBA WOOD OIL - Allergen 2023 Declaration https://www.madarcorporation.com/spec-sheets/essential-oil/hiba-wood/Hiba%20Wood%20-%204593305-All%20docs.pdf (Allergen Declaration: Citronellol 1.5%)
alpha-Terpineol	0.25%	0.25–0.25%	monoterpene alcohol	View source MADAR Corporation HIBA WOOD OIL - Allergen 2023 Declaration https://www.madarcorporation.com/spec-sheets/essential-oil/hiba-wood/Hiba%20Wood%20-%204593305-All%20docs.pdf (Allergen Declaration: Terpineol 0.25%, isomer mixture including CAS 98-55-5)
Terpinolene	0.25%	0.25–0.25%	monoterpene hydrocarbon	View source MADAR Corporation HIBA WOOD OIL - Allergen 2023 Declaration https://www.madarcorporation.com/spec-sheets/essential-oil/hiba-wood/Hiba%20Wood%20-%204593305-All%20docs.pdf (Allergen Declaration: Terpinolene 0.25%)

Profile source: Phytoconstituent profile and biological activity of wood chips of Aomori Hiba (Thujopsis dolabrata SIEB. et ZUCC. var. hondai MAKINO); HIBA WOOD OIL product information pack; Hiba Wood product page · https://hirosakiuhw.repo.nii.ac.jp/record/184/files/HirosakiIryoFukushi_10%281%29_15.pdf ; https://www.madarcorporation.com/spec-sheets/essential-oil/hiba-wood/Hiba%20Wood%20-%204593305-All%20docs.pdf ; https://sg.hysses.com/blogs/essential-oil-101/hiba

A TRADITION OF BOTANICAL CURIOSITY

Traditional & reported uses

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

traditionally used in aromatherapy for grounding, calming effects similar to other cedarwood oils
reported to be used in blends for supporting restful sleep
used in perfumery and woodworking-inspired fragrances for its woody, medicinal, slightly camphoraceous facet
traditionally associated with easing occasional mental fatigue in diffuser blends
shares the reputed insect-deterrent folklore common to Hinoki/Hiba wood oils used in household blends
used in massage blends for grounding, meditative aromatic support

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 · 3 data gaps

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

No public source found in this pass that publishes aroma intensity on the repository's native 0-100 scale; the stored 72 value is a normalization from Hysses 'Moderate to Strong' and Bartok Design 'Strength of Aroma: Strong'.
The IFRA certificate provides 44.66% for Category 2 and lists several dermal categories as not limited; no public source was found in this pass that states a single AromaForge-native leave-on max dermal percentage for Thujopsis dolabrata wood oil.
Table 1 of the Hirosaki 2019 paper identifies 25 total compounds summing to 75.0%; several minor entries (beta-elemene, alpha-funebrenes, aromadendrene, aromadendr-9-ene, patchoulene, beta-chamigrene, beta-eudesmene, allo-aromadendrene oxide, alpha-costol, alpha-bisabolol, cis/Z-alpha-bisabolene epoxide) have OCR-corrupted or illegible percentage values in the only located full-text copy of this paper and were not added to avoid invented numbers; closure therefore remains below the 0.95 target with currently verifiable public data.