If you'd asked me about Kunzea essential oil six months ago, I would have had no idea what you were talking about.
Then I received a bottle as a gift through my essential oil company, started diffusing it with orange just to see what it smelled like — and now it's one of my absolute favorites. Fresh, earthy, a little camphor-y, a little citrusy. It's one of those scents that just makes a room feel clean and calm.
And then a reader wrote in asking about tweaking her DIY fly spray to help with ticks — and suddenly I was down a Kunzea rabbit hole I wasn't expecting. What I found was genuinely fascinating, and I think once you understand what's in this oil and what it's actually been researched for, you'll feel the same way.
What Is Kunzea Essential Oil?
Kunzea ambigua is an Australian shrub native to Tasmania and the coastal southeastern regions of Australia, belonging to the Myrtaceae family — the same family as tea tree and eucalyptus. It goes by several common names, including Tasmanian Kunzea, White Kunzea, and my personal favorite: Tick Bush.
The essential oil is wildcrafted and steam distilled from the flowers and leaves of the plant, which has been used by Aboriginal Australians for thousands of years. It's recognized by Australia's Therapeutic Goods Administration (TGA) — essentially the Australian equivalent of the FDA — for its use in skin applications and as a natural insect repellent.
The scent is fresh, medicinal, and slightly camphoraceous with earthy and citrus undertones. It blends beautifully with orange, eucalyptus, lavender, and cedarwood.
Its active compounds — including alpha-pinene, 1,8-cineole, and viridiflorol — overlap significantly with better-known oils like tea tree and eucalyptus, but in a combination that tends to be gentler on skin.
Kunzea Oil and Its Traditional Use for Pain and Inflammation
Aboriginal Australians have traditionally used Kunzea for pain relief — specifically for muscular pain, joint discomfort, and conditions like arthritis — for thousands of years. That's a meaningful track record that modern research is beginning to catch up with.
The alpha-pinene and 1,8-cineole found in Kunzea are both compounds that have been studied for their activity in supporting comfort in muscles and joints when applied topically in a diluted carrier oil.
A study published by Griffith University found that Kunzea ambigua essential oil demonstrated significant antibacterial activity against multiple pathogens associated with inflammatory conditions, which helps explain its long history of traditional use for pain and swelling.
I want to be clear — I'm not a vet or a doctor, and I'm not making medical claims here. What I am saying is that the traditional use of this plant has real science beginning to support it, and I find that genuinely interesting.
Kunzea Essential Oil Antimicrobial Research
This is where Kunzea starts to get really interesting.
A research thesis from the University of Tasmania investigated Kunzea oil's composition, bioactivity, and therapeutic potential — and the findings on antimicrobial activity were significant. The oil demonstrated antimicrobial activity against several hospital-acquired pathogens, including MRSA (methicillin-resistant Staphylococcus aureus) — one of the most antibiotic-resistant bacteria we currently deal with.
A study from Griffith University found that Kunzea ambigua showed significant antibacterial activity against Klebsiella pneumoniae, Pseudomonas aeruginosa, and Proteus mirabilis, with minimum inhibitory concentrations as low as 33 µg/mL.
Does this mean Kunzea essential oil is a replacement for medical treatment?Absolutely not.
But it does suggest this oil has real, research-backed antimicrobial action — not just traditional lore.
For me personally, this is why I've started reaching for Kunzea as part of my routine for minor wounds and skin irritations on my horses. Diluted in a carrier oil and applied to the area, it's become a go-to in my barn kit.
Kunzea as a Natural Insect Repellent: Why It's Called the Tick Bush
Here's the part that sent me down this rabbit hole in the first place.
One of Kunzea's most well-known common names is literally "Tick Bush." The plant is naturally repellent to insects — something Aboriginal Australians knew and used long before any research confirmed it.
The University of Tasmania research found that Kunzea essential oil provides mosquito repellency comparable to citronella — which is saying something, since citronella is one of the most widely recognized natural insect repellents. Kunzea is also formally recognized by Australia's Therapeutic Goods Administration as a natural insect repellent.
Kunzea Essential Oil for Horses
Here's what I find most compelling for horse owners: there is an actual randomized controlled trial — real clinical research — on the use of Kunzea essential oil for pastern dermatitis in horses.
The pastern dermatitis study included 37 horses and compared a Kunzea oil ointment to a conventional ketoconazole treatment. The results showed a significant reduction in lesion size in the Kunzea group, with 63.6% of horses achieving complete resolution — compared to no significant improvement in the ketoconazole group.
That's not anecdotal. That's a controlled trial with measurable outcomes, and for anyone who has dealt with pastern dermatitis, mud fever, or scratches, that's a meaningful finding.
Beyond the pastern dermatitis research, here's how I've been using Kunzea with my own horses:
- Minor wounds and skin irritations — diluted in a carrier oil applied directly to the area
- DIY fly spray — adding to my recipe as a natural pest deterrent during fly and tick season. If you want to read more about how I approach fly spray overall, that full blog is here.
- Muscle and joint support — diluted in a carrier and massaged into sore areas after a ride.
Kunzea Essential Oil for Dogs
Everything mentioned above translates well to dogs — with the usual care around dilution and knowing your individual animal.
For tick season, it's worth exploring adding Kunzea essential oil to your dog's coat spray or regular flea and tick support blend. I wouldn't rely on it as a standalone solution, but as part of a layered natural approach it's worth having in your toolkit.
For skin irritations, minor scrapes, or anywhere you'd want gentle topical support — Kunzea diluted in coconut or fractionated coconut oil absorbs nicely. If you want to go deeper on natural flea and tick support for dogs, I have a full blog on that here.
And if you want to enjoy the aroma — three drops Kunzea and three drops orange in your diffuser is one of the best odor-control combinations I've come across. It just makes your house smell amazing.
How to Use Kunzea Essential Oil
Topically: Best practice is to dilute in a carrier oil. A standard dilution for adults is 2-3% (roughly 12-18 drops per ounce of carrier oil). For animals, keep it on the lower end — around 0.5-1% for horses, less for small dogs.
In a diffuser: 3-4 drops on its own, or blended with orange, lavender, eucalyptus, or cedarwood. Three drops Kunzea + three drops orange is my personal go-to.
In fly or coat spray: Add 10-15 drops per 8 oz of your base spray as part of a blend.
Storage: Like all essential oils, Kunzea does best when stored away from heat and light. A cool, dark spot is ideal — and refrigeration works great if you need longer-term storage. If you want to learn more about storing your oils properly, I have a full blog on that here.
A note on quality: As with all essential oils, quality and source matter. I've personally visited the farms and even helped distill and bottle the oil — and that kind of transparency is exactly why this is the only brand I use and recommend.
Final Thoughts on Kunzea Essential Oil
Kunzea essential oil is one of those oils that deserves a lot more attention than it gets — especially for those of us with horses and dogs. The research is there, the traditional use is there, and my personal experience has been really positive.
I'm still exploring everything it can do, and I'm sure I'll have more to share as I continue using it. If you've tried Kunzea or have questions, I'd love to hear from you — drop a comment below.
0 Comments