The quick answer
Tamanu oil (huile de calophylle in French) is a thick, strong-smelling oil cold-pressed from the nut kernels of the Calophyllum inophyllum tree, which grows along tropical coasts from Asia and Africa to the Pacific islands. Island communities have long used it on scars, burns, wounds, acne and eczema. Lab and animal studies back up some of its wound-healing and antibacterial effects, but there are no solid human trials yet. Use small amounts, patch test first, and stop if your skin reacts.
Tamanu oil is for skin only; it is not an edible oil. It is pressed from a nut, and doctors have reported allergic skin reactions to it. If you have a nut allergy, talk to your allergist before trying it.
What is tamanu oil?
Calophyllum inophyllum is an evergreen tree of tropical seashores. People in French Polynesia call it tamanu and treat it as a sacred tree; in Hawaii it is known as kamani, and French speakers call the oil huile de calophylle (calophylle inophylle). The nuts hold white kernels that are about 75% oil by weight (Pribowo et al., Evidence-Based Complementary and Alternative Medicine, 2021). Producers dry the nuts, then press the kernels without heat to get a non-edible oil used in traditional medicine and cosmetics (Cassien et al., Antioxidants, 2021).
Two things set tamanu apart from ordinary plant oils:
- Its fats. Like most seed oils, tamanu is mostly fatty acids, chiefly oleic and linoleic acid with some palmitic and stearic acid. It holds more saturated and monounsaturated fat than borage or prickly pear seed oil (Fratianni et al., Antioxidants, 2025).
- Its resin. Tamanu also carries a resinous fraction rich in unusual compounds such as calophyllolide, inophyllums, calanolides and tamanolides. When researchers wash this resin out with alcohol, part of it separates as a gummy, dark green solid (Cassien et al., 2021). The exact mix shifts from island to island (Ginigini et al., PeerJ, 2019).
The result is a heavy oil with a strong nutty smell. Formulation scientists actually list the odor and high viscosity as its main drawbacks (Krishnappa et al., Pharmaceuticals, 2024).
Tamanu oil benefits for skin (bienfaits): what research shows
Pacific and Indian Ocean communities have used tamanu oil on burns, scars, infected wounds, eczema, acne and other skin complaints for generations (Léguillier et al., PLoS One, 2015). Here is how far the science has caught up:
- Wound healing in cells. Oils from Indonesia, Tahiti, Fiji and New Caledonia all sped up closure of scratch "wounds" in human skin cells, and they inhibited bacteria in culture at doses below those that harmed the cells. The antibacterial compounds sat in the resin fraction (Léguillier et al., 2015). A Polynesian tamanu emulsion also boosted growth and collagen production in human skin cells (Ansel et al., Planta Medica, 2016).
- Wound healing in animals. In 21 rats, wounds treated with tamanu oil built granulation tissue and collagen faster than saline-treated wounds, with less wound contraction (Erdogan et al., Journal of Wound Care, 2021). Gels containing 5% to 20% tamanu oil also improved healing in rats and did not irritate rabbit skin (Krishnappa et al., 2024).
- Inflammation. Calophyllolide, one of tamanu's resin compounds, reduced leaky blood vessels in mouse inflammation tests (reviewed by Pribowo et al., 2021).
- Eczema. A 2021 review calls tamanu a promising candidate for atopic dermatitis based on its lab and animal effects, but it is a case for future trials, not proof (Pribowo et al., 2021).
What is missing: controlled studies in people. We found no human trial testing tamanu oil on scars, acne or dry skin. Treat it as a traditional remedy with encouraging lab support, not a proven scar treatment.
Tamanu vs rosehip vs jojoba oil
These three often sit side by side in the skin-care aisle. They are quite different oils:
| Tamanu | Rosehip | Jojoba | |
|---|---|---|---|
| Source | Nut kernels of Calophyllum inophyllum | Seeds of wild rose (Rosa canina) | Seeds of Simmondsia chinensis |
| Main components | Oleic and linoleic acids, plus a resin with calophyllolide and related compounds | Alpha-linolenic and linoleic acids, with tocopherols | About 98% wax esters, so it is a "liquid wax" rather than a true fat |
| Texture and scent | Thick, with a strong nutty smell | A pourable seed oil | A pourable liquid wax |
| Shelf stability | Not tested against the others; keep cool and dark | Oxidizes readily because its fats are highly unsaturated | Very resistant to oxidation |
| Best fit | Small amounts on rough patches and marks | Buy small bottles and use them up | An easy carrier for blending other oils |
Rosehip and jojoba details are from Fagoaga et al., Antioxidants, 2026, and Gad et al., Polymers, 2021. If tamanu feels too heavy, mix a little into jojoba for a lighter feel and milder smell.
How to use tamanu oil
- Patch test. Rub a drop on your inner forearm and wait a day. Allergic contact dermatitis from tamanu oil has been reported in France more than once (Le Coz, Contact Dermatitis, 2004; Amsler et al., Contact Dermatitis, 2022).
- Use a little. A few drops cover a small area. Smooth it onto clean skin, on a dry patch or an old mark.
- Or dilute it. Blend it into a lighter oil like jojoba, or into an unscented lotion, if the texture or smell bothers you.
- Skip broken or infected skin. The wound research was in cells and animals. See a clinician for deep, infected or non-healing wounds.
- Store it well. Keep the cap tight and the bottle away from heat and light to slow oxidation.
Who should be careful
- Nut allergies. The oil comes from a nut kernel, and allergy data are scarce. Ask your allergist first.
- Sensitive or allergy-prone skin. Patch test, since contact allergy has been reported.
- Acne-prone skin. Test on a small area before using it on your whole face, because it is a heavy oil.
- Eating it. Don't. Tamanu is a non-edible oil.
Find it at William's
We carry LifeFlo pure tamanu oil, 1 fl oz. It is cold-pressed from tamanu nut kernels without heat or chemicals and is USDA certified organic (certified by CCOF). Want something lighter to blend it with? Our avocado oil guide covers another rich skin and kitchen oil, and our herbal oils A to Z guide explains calendula, evening primrose and other skin oils. For blemish-prone skin, see our tea tree oil guide.
Frequently Asked Questions
What is huile de calophylle good for? (Quels sont ses bienfaits?)
Huile de calophylle is tamanu oil. It is traditionally used on scars, burns, small wounds, acne and eczema. Lab and animal studies support wound-healing and antibacterial effects, but human trials are still missing.
Does tamanu oil fade scars?
It is popular for scars, and rat studies found it improved wound healing and collagen. No controlled human trial has tested it on scars, so results are uncertain. If you try it, patch test first and use it steadily before judging.
Is tamanu oil good for acne?
Lab studies show tamanu oil can inhibit bacteria, and it is used traditionally on blemishes. There are no acne trials in people, and it is a heavy oil, so try it on a small area first.
Why does tamanu oil smell so strong?
Its resin fraction is rich in unusual compounds, and researchers note its strong nutty odor. Blending it with jojoba or a lotion softens both smell and texture.
Can I use tamanu oil if I have a nut allergy?
Check with your allergist first. Tamanu oil is pressed from a nut kernel, little allergy research exists, and allergic skin reactions have been reported.
Can you cook with tamanu oil?
No. Tamanu oil is described as non-edible and is sold for skin use only.
Shop it at William’s
Online prices can differ from in-store prices. Call ahead to check stock.