Frankincense Oil for Cancer: Research, Benefits, Uses & Safety

QUICK SUMMARY

Frankincense oil for cancer has real research behind it, but almost all of it is in the lab. Frankincense essential oil has killed breast and liver cancer cells in petri dish studies, often while leaving normal cells comparatively unharmed, and it slowed breast tumors in mice.

The human evidence so far comes from Boswellia extracts rich in boswellic acids, not the essential oil. In a 2025 study of 94 patients with brain swelling after radiation for cancer, Boswellia shrank or cleared the swelling in about 60 percent of them, and in a 2024 trial it slowed the growth of breast cancer cells in women waiting for surgery. We use frankincense oil aromatically, diluted on the skin, and in capsules as a powerful adjunct to cancer care, never as a cure.

A 2025 study on frankincense oil and breast cancer brought an old debate back to fever pitch: can frankincense essential oil help cancer patients? Researchers in Egypt and Germany tested oil from Boswellia carterii on three lines of breast cancer cells and in mice with mammary tumors. The oil cut the cancer cells’ viability, and the mice that received it by mouth every day for 21 days had smaller tumors than the untreated mice, with extensive tumor cell death under the microscope. (1)

So the purpose of this article is to unpack fact from fiction, because there are a lot of conflicting claims out there in the blogosphere and sensational headlines. The first fact is the one most people miss: frankincense essential oil and frankincense extract are not the same thing.

Essential Oils vs. Extracts

Today there is a lot of confusion over where frankincense’s anticancer effects come from. The resin, the essential oil, and the extracts all come from the same gum resin collected from the tree, but they do not contain the same compounds.

Frankincense essential oil is steam distilled or hydrodistilled from the resin. Steam is pushed through the resin, the vapor is condensed on a cooling coil, and the oil is separated from the hydrosol. Only the constituents light enough to be carried by the steam make it into the oil.

Frankincense extracts are made with a solvent such as alcohol, water, or a carrier oil that dissolves certain compounds out of the resin. Depending on the solvent, an extract can concentrate the heavier boswellic acids, including AKBA, that the essential oil mostly leaves behind.

Put simply, the essential oil holds the light aromatic compounds and many extracts hold the heavy resin acids. So before you ask, “Does frankincense help cancer?” ask, “Which frankincense was used in the study?” When you shop, read the label for:

• Species: Boswellia sacra, Boswellia carterii, Boswellia serrata, or another Boswellia species
• Product type: essential oil, resin, extract, supplement, hydrosol, or oleoresin
• Extraction method: steam distillation, hydrodistillation, alcohol extraction, CO2 extraction, or standardized extract
• Testing: GC/MS for essential oils or standardization data for extracts

Frankincense Extract and Cancer

It may surprise you, but the research on frankincense extract shows stronger promise against cancer than the research on the oil. That does not dismiss the oil. It simply recognizes that much of the evidence comes from boswellic acids, which are not present in meaningful amounts in a typical steam-distilled oil.

Case in point is colorectal cancer. In a 2025 study from the Chinese Academy of Medical Sciences, AKBA, the most studied boswellic acid, slowed the growth of human colorectal cancer cells, quieted the inflammatory signals that feed them, and held back colitis-related colon cancer in mice while improving their gut bacteria. The researchers concluded that “AKBA may be used as a potential therapeutic agent” for colorectal cancer. (2)

The research has also reached people. In a 2024 Phase Ia trial, 20 patients with invasive breast cancer took 2,400 mg of Boswellia serrata a day between their biopsy and their surgery, a median of 11 days. Cancer cell proliferation, a measure of how fast the tumor cells were dividing, rose 54.6 percent in an untreated comparison group and fell 13.8 percent in the patients taking Boswellia, with no serious side effects from the extract. (3)

Frankincense compounds also work with the immune system. A 2026 study from Oman tested incensole, a compound from frankincense resin, in mice with melanoma. It turned immune cells called macrophages toward their tumor-fighting form, drew more immune cells into the tumor, and significantly lowered tumor burden and spread. (4)

A 2022 systematic review of frankincense research described the bigger picture: frankincense regulates immune cells of both the innate and the acquired immune system. (5) Boswellia is also known for calming inflammation, arguably the primary risk factor for most chronic diseases.

That same review found that clinical trials in people showed frankincense worked against osteoarthritis, multiple sclerosis, asthma, psoriasis, gum inflammation, and pain, with only mild side effects. (5) A 2024 meta-analysis pooled 13 knee osteoarthritis trials, and in the trials that compared Boswellia with a placebo, patients taking Boswellia had significantly lower pain, stiffness, and function scores. (6)

Cancer treatment itself can be hard on the body. Brain cancer patients who receive radiation often develop cerebral edema, swelling in the brain, which is usually treated with steroids that carry their own side effects.

In a 2011 randomized, placebo-controlled, double-blind trial, 44 patients with brain tumors received radiation plus either 4,200 mg a day of Boswellia serrata or a placebo. Brain swelling dropped by 75 percent or more in 60 percent of the patients taking Boswellia, compared with 26 percent on placebo, and there were no severe side effects in either group. The researchers concluded that Boswellia “could potentially be steroid-sparing” for these patients. (7)

That finding has held up in the clinic. A 2025 study reviewed the records of 94 patients who developed radiation necrosis, a kind of brain injury, after radiosurgery for cancer that had spread to the brain. Taking 4,050 to 4,500 mg of Boswellia a day for at least two months shrank or cleared the swelling in 59.6 percent of them, the benefit lasted a median of almost 14 months, and the only side effect was mild to moderate stomach upset in about one in six. (8)

A 2025 review gathered every human report on Boswellia after brain radiation, six studies and 130 patients. Roughly half benefited, and about one in three could taper off steroids or avoid taking them long term. The authors called it a “potential low-cost corticosteroid-sparing option” and asked for well-designed trials to confirm it. (9)

Importance of Boswellic Acids

Boswellic acids are the main reason frankincense extracts are studied for cancer. The family includes beta-boswellic acid, acetyl-beta-boswellic acid, 11-keto-beta-boswellic acid, and acetyl-11-keto-beta-boswellic acid, better known as AKBA.

Ask any chemist and they will tell you that boswellic acids are heavy molecules that standard steam distillation does not carry into the oil. That is why many of the frankincense cancer studies you see online are extract studies, not essential oil studies.

In the lab, boswellic acids have shown anti-inflammatory, anti-mutagenic, and apoptotic (programmed cell death) effects. A 2023 review concluded that boswellic acids and their semi-synthetic derivatives “are effective against a broad spectrum of cancer cell lines.” (10)

The healing benefits of frankincense have traditionally centered on fighting inflammation, and researchers have confirmed it. The 2022 systematic review found that frankincense works on several of the body’s inflammation pathways at once, blocking leukotriene production and the COX-1, COX-2, and 5-lipoxygenase enzymes. (5) Part of having a well-functioning immune system is keeping inflammation in check.

So if your goal is boswellic acids, you are looking for a standardized Boswellia extract or supplement. If your goal is aroma, prayer, emotional grounding, respiratory support, or topical comfort, frankincense essential oil is the right tool. We do not have to choose between tradition and science; we match the preparation to the purpose.

Frankincense Oil and Cancer

While the extracts show more promise because of their boswellic acid content, there is still a fair amount of evidence that frankincense essential oil itself is worth considering. The studies so far are in cancer cells and in animals, not in cancer patients.

Breast cancer has drawn the most attention. Besides the 2025 mouse study above (1), Chinese researchers reported in 2026 that Boswellia serrata essential oil slowed the growth of triple-negative breast cancer cells and pushed them into apoptosis, programmed cell death. Combined with the chemotherapy drug doxorubicin, the oil worked synergistically, which the authors said could mean “potentially reducing the required dosage and associated toxicity” of chemotherapy. (11)

Liver cancer is next. A 2025 study in Scientific Reports found that a frankincense oil nanoemulsion killed human liver cancer cells while showing minimal toxicity to normal human skin cells. (12) And a 2026 study from Mexico found that both Boswellia serrata oil and AKBA killed liver cancer cells, with AKBA the more potent of the two, which fits everything we said above about extracts. (13)

In 2012, University of Oklahoma researchers showed that Boswellia sacra oil killed human pancreatic cancer cells in the lab and slowed pancreatic tumors in mice. Here is the twist: the oil distilled longer and hotter (100°C) carried more high molecular weight compounds, including boswellic acids, and it was the most potent. (14) So even among essential oils, how the oil is made matters.

Beta-Elemene

Beta-elemene is one constituent in the oil that has drawn cancer researchers’ attention. It is found in frankincense as well as myrrh oil. Memorial Sloan Kettering Cancer Center states that “beta-elemene was shown to prevent growth of cancer cells in laboratory cells by different mechanisms,” and that a few poorly designed studies in humans showed it may improve quality of life in cancer patients. (15)

Both oils contain only small amounts of it. Anecdotally, many people say both oils have improved their quality of life during cancer care.

We cannot say that beta-elemene is the reason for this. What we do know from aromatherapy research is that essential oils work synergistically, as whole oils with dozens of compounds, which is also why adulterated copies cannot be expected to do what a pure oil does.

Research Update

Overshadowed for centuries by its role in the Christmas story, frankincense is finally getting the attention it deserves as one of the most viable healing agents on the planet. Studies continue to emerge on frankincense, its oil, and its boswellic acids in many kinds of cancer, in cells and in animals:

• breast cancer (1), (11)
• liver cancer (12), (13)
• colorectal cancer (2)
• prostate cancer (16)
• melanoma (4)

In a 2025 lab study from India, AKBA slowed the growth of human prostate cancer cells, triggered programmed cell death, and made the cells more sensitive to the chemotherapy drug doxorubicin. (16) The field is growing fast. A 2025 analysis counted 332 publications on boswellic acid and cancer from 49 countries, with the number of papers rising every year since 2015. (17)

According to One Researcher

Much of the early frankincense oil research came from the laboratory of Dr. Hsueh-Kung Lin in the Department of Urology at the University of Oklahoma Health Sciences Center. In a 2011 paper, his team reported that Boswellia sacra oil killed breast cancer cells while leaving normal cells comparatively unharmed. (18)

Dr. Lin also wrote to us personally to summarize what his team had observed across their frankincense oil studies:

1. Frankincense oil induces potent cytotoxicity in various types of cancer cells but not their normal counterparts.
2. Unlike chemotherapy drugs, frankincense oil benefits specifically targets tumor cells but not fast-growing cells. This might be “no observable adverse effects” using frankincense oil.
3. Frankincense oil benefits prevent cellular network formation of tumor cells.
4. Frankincense oil benefits cause the breakdown of multicellular tumor spheroids, which might be the cause of drug resistance.
5. Frankincense oil benefits simultaneously activate multiple signaling pathways including the caspase pathway leading to apoptosis. Is this similar to the use of “drug cocktails” in complicate diseases?

Based on reported human case studies so far, we described the following observations in humans:

1. Frankincense oil induces apoptosis of tumor cells.
2. Frankincense oil does not have any noticeable adverse effects when the appropriate dose is applied.
3. Frankincense oil attracts infiltration of inflammatory cells to the tumor site with unknown mechanism.

His heart for patients came through just as clearly: “my main concern is how about the people who are fighting against cancers now. Can we provide anything to help while they are dealing with the deadly disease?”

Interesting, huh?

What the Research Means for Cancer Patients

Essential oils are transdermal and work at the cellular level, and each species has distinct properties. Peer-reviewed articles describe essential oils and boswellic acids stopping and even reversing the growth of many cancer lines, though nearly all of these studies were in cells in a petri dish or in animals.

The closest thing to a human story for the oil itself comes from Dr. Lin’s team. In 2017 they published a case report in Integrative Cancer Therapies describing a 52-year-old man with invasive bladder cancer who chose to delay the standard surgery and took a Boswellia sacra hydrodistillate by mouth every day after his tumor was removed. He had two recurrences in the first year, both far smaller than the original, and then no detectable cancer in his bladder for 14 months. (19)

Because nearly all of this work is in the lab, many experts and critics insist we cannot carry these results straight over to live, in vivo cancer patients. There is merit to that, and the 2022 systematic review put it plainly: Boswellia eased brain tumor swelling but did not shrink the tumors, and its potential against other cancers “is still speculative.” (5)

We will not tell you that frankincense cures cancer. We also will not dismiss the research, which already includes brain tumor studies, a breast cancer trial, and a human case report.

The lab work also carries one caution worth knowing. In a 2024 study of childhood high-grade brain tumor cells, two of the boswellic acids found in common Boswellia supplements (alpha- and beta-boswellic acid) promoted some tumor properties, while pure AKBA did not, so the researchers advised against mixed-boswellic-acid supplements for these children. (20)

Natural therapies can and, in our opinion, should be used alongside conventional medicine. It is not an all-or-nothing choice. Our personal recommendation is to work with an integrative oncologist who will help you add frankincense to your care.

How to Use Frankincense Oil

Frankincense oil is prized for its anti-inflammatory properties, and it has traditionally been used for the immune system, respiratory concerns, and stress and anxiety. All of these weigh on the cancer patient, which is why so many have made frankincense part of their fight. There are three ways to use it.

• INHALATION: Burning incense is the oldest form of aromatherapy, and today diffusing frankincense is arguably the safest way to enjoy its healing components. Oils diffused throughout a room are relatively safe for most people because of the low concentration when used correctly. For a more direct effect, breathe in a steam or inhale from the bottle or from a few drops on a cloth. See how to use an essential oil diffuser and favorite blends.
• TOPICAL: Topical use is more direct than inhalation, and frankincense is a favorite in massage. The safest application is always diluted: carrier oils like olive, coconut, jojoba, and avocado oils have benefits of their own, and a couple of drops of frankincense in a teaspoon of carrier helps you avoid irritation. Our dilution guide walks you through every ratio.
• INTERNAL: Frankincense can also be taken internally. The most basic form of ingestion is in culinary use, and you only need one drop in a dish or a capsule. Oil and water do not mix, so a drop in water stays undiluted; dilute it first in an edible carrier like coconut oil. Many aromatherapists believe essential oils should never be ingested, but we disagree, because research and traditional use suggest otherwise. If you are taking medications, talk with your doctor before ingesting essential oils.

Practical Applications

Implement frankincense into your natural health regimen today. Diffuse it for respiratory and emotional support, use it in a diluted salve for skin issues, and use a standardized Boswellia supplement when boswellic acids are the goal.

To help support healthy immunity:

• Add 1 drop of frankincense oil to 1 teaspoon of carrier oil (like coconut), and consume first thing in the morning. This is not intended to be a long-term solution and should only be used for 2–3 weeks at a time. Discontinue use immediately upon signs of adverse reactions.
• Put 1–2 drops in a soft gel capsule along with carrier oil to prevent esophageal irritation.
• Add 3 drops each of frankincense and myrrh oils to your favorite diffuser.

To address tumors and malignant growths, consider:

• Applying diluted frankincense on the tumor directly, and on the bottoms of your feet. 2 drops of carrier oil per drop of frankincense is a popular approach. That is a strong dilution, so test it on a small patch of skin first, use it for short periods, and keep it off broken skin, surgical wounds, and skin being treated with radiation.

For the whole person:

• Use frankincense in prayer, worship, and calming routines to ease fear and stress.
• Diffuse frankincense with myrrh, lavender, or orange during rest periods.
• Eat a bioactive-rich, anti-inflammatory diet with herbs, spices, colorful plants, and clean proteins.
• Prioritize sleep, gentle movement, hydration, community, and spiritual support.

Essential oils enhance your body’s innate, God-given ability to heal itself, but they are a powerful adjunct to a healthy life, not a replacement for one.

Frankincense Oil and Cancer FAQs

Can frankincense oil kill cancer cells?

Yes, in the lab. Frankincense essential oil has killed breast and liver cancer cells in cell studies, often while sparing normal cells, and it has reduced breast tumors in mice. (1, 11, 12) We are not aware of any clinical trial that has tested the oil against cancer itself. The only trial of the oil in cancer patients we found, a 2023 pilot study of 70 people on chemotherapy, looked at fatigue: rubbing frankincense on the soles of the feet worked no better than plain carrier oil. (21)

Is frankincense essential oil the same as Boswellia extract?

No. The essential oil is distilled from the resin and holds the light aromatic compounds. Boswellia extract is made with solvents and can concentrate boswellic acids such as AKBA, which is why the human cancer trials so far have used the extract.

Does frankincense oil contain boswellic acids?

A typical steam-distilled oil contains very little, because boswellic acids are too heavy to travel with the steam. Oil hydrodistilled longer and at a higher temperature can carry more of them.

Can cancer patients diffuse frankincense oil?

Yes. Diffusing is one of the gentlest ways to use any essential oil, and frankincense is a favorite for prayer, rest, and calming fear. Diffuse in short sessions in a well-ventilated room and stop if you notice any irritation.

Is frankincense safe during chemotherapy or radiation?

Diffusing and diluted topical use are gentle, but keep oils off skin being treated with radiation and off surgical wounds. Boswellia supplements may increase the risk of bleeding if taken with blood thinners such as warfarin, so tell your oncology team before you start one. (22)

Keep reading: 12 Healing Oils of the Bible: Uses & Anointing Oil Recipe · Our Response to Netflix (Un)Well: Essential Oils, Cancer, Ingestion & MLMs · Essential Oils for Cancer: Research, Benefits & Safe Uses