Blue Cypress (Callitris intratropica)
A woody, blue-tinted single oil distilled from Australian cypress wood, popular for skin, hair, and outdoor-activity routines.
How to use it
3–5 drops alone, or with citrus oils for an outdoor-inspired blend that travels well.
Dilute in a carrier oil — a long-standing favorite for moisturizing dry skin and scalp.
Safety in detail
- Max dermal use
- Dilute in a carrier oil for skin
- Phototoxic
- No
- A gentle, viscous wood oil; dilute before topical use as usual.
- Its blue guaiazulene can stain fabrics and light surfaces.
- Not phototoxic. Keep out of reach of children.
Sources: JEOR study (2001)
Composition & chemistry
- Guaiol 15%
- β-Eudesmol 8%
- Bulnesene 8%
- Dihydrocolumellarin 6%
- Selinene 5%
- Guaiazulene 4%
- Other minor constituents 54%
- Guaiol — a sesquiterpene alcohol central to blue cypress's soft, sweet-woody aroma JEOR study (2001)
Steam-distilled blue cypress (Callitris intratropica/columellaris) wood oil; a sesquiterpene oil rich in guaiol and guaiazulene, the latter giving its blue tint.
Source: JEOR study on azulenes, costols and γ-lactones from cypress-pines (2001)Its soft blue tint comes from guaiazulene formed during distillation — shared by only a few oils.
What the research says
An honest read of the published research — what has actually been studied, at what stage. Not medical advice or a promise of results.
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Blue cypress oil has been studied for uses including insect repellency, and its sesquiterpenes for various activities in the laboratory. These are preliminary findings, not clinical health claims.
JEOR study (2001)
Evidence & sources
Peer-reviewed research on Blue Cypress's chemistry and safety. These describe composition and documented effects — not health or treatment claims.
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Blue cypress is a guaiol- and guaiazulene-rich sesquiterpene wood oil, its blue colour coming from the azulene fraction.
JEOR study (2001)
Frequently asked questions
Why is blue cypress blue?
Its colour comes from guaiazulene, an azulene sesquiterpene formed from precursors in the wood during distillation — a different blue compound from the chamazulene in blue tansy and German chamomile. JEOR study (2001)
What does blue cypress smell like?
Soft, sweet, and woody with a faint smoky-resinous depth from its sesquiterpene alcohols — warmer and rounder than the fresh, sharp Mediterranean cypress. JEOR study (2001)
Is blue cypress phototoxic?
No — it's a distilled wood oil and isn't phototoxic. It can stain, though, so dilute and handle it with care.
Gallery
The Plant
Blue Cypress (Callitris intratropica) comes from a conifer native to Australia’s Northern Territory, sometimes called Northern Cypress Pine, that grows across the tropical savanna woodlands of that region. It has no botanical relation to the Mediterranean cypress most people picture — it’s a distinct genus entirely, and the tree has long been valued by Aboriginal Australians and later by the timber industry for wood that resists termites and rot.
Extraction & Aroma
The oil is steam-distilled from the wood, producing a warm, woody aroma with a soft blue tint that comes from naturally occurring guaiazulene, a compound formed during distillation from precursors in the wood. That blue color is one of the more visually distinctive traits in the essential oil world, shared by only a small handful of other oils like blue tansy and blue yarrow.
Traditional & Everyday Uses
In the diffuser: 3–5 drops alone, or blended with citrus oils for an outdoor-inspired combination that travels well and holds up in warm weather.
On skin: dilute in a carrier oil before use; blue cypress has a long tradition of use for moisturizing dry skin, and it’s a frequent addition to hair and scalp blends (see our hair growth guide).
Pairing
Beyond citrus, blue cypress pairs naturally with other woodsy oils like cedarwood or sandalwood for a deeper, more grounding blend, or with lavender for a softer, more balanced evening combination.
Sourcing Note
Blue cypress is harvested from a specific regional wood supply rather than grown as a widespread commercial crop, so consistent sourcing matters for both aroma and color — batches from different harvests can vary in the intensity of their blue tint.
Found in these blends
Blue Cypress is one of the oils inside 8 Young Living blends.