Frankincense oil can be used for inflammation topically (diluted with a carrier oil), through inhalation, or as an oral supplement in standardized extract form. The active compounds in frankincense, called boswellic acids, work by blocking a specific enzyme involved in producing inflammatory molecules in your body. How you use it depends on where your inflammation is and what form of frankincense you’re working with.
Why Frankincense Works on Inflammation
Frankincense resin contains a group of compounds called boswellic acids. The most potent of these, known as AKBA, directly inhibits an enzyme called 5-lipoxygenase (5-LOX). This enzyme is responsible for producing leukotrienes, which are chemicals your immune system releases during inflammation. They drive swelling, pain, and tissue damage in conditions like arthritis, inflammatory bowel disease, and skin injuries.
What makes boswellic acids unusual is their mechanism. They don’t work the same way as common anti-inflammatory drugs like ibuprofen. Instead of blocking the COX pathway, they target 5-LOX at a unique binding site, shutting down leukotriene production through a completely separate route. This is why some researchers view frankincense as complementary to, rather than a replacement for, standard anti-inflammatories.
Topical Use for Localized Pain and Swelling
For joint pain, muscle soreness, or inflamed skin, applying diluted frankincense oil directly to the area is the most common approach. Essential oils are highly concentrated and will irritate skin if applied undiluted, so you need a carrier oil as a base.
A standard dilution for adults is 2 to 3 percent: mix 6 to 9 drops of frankincense essential oil into 1 tablespoon (15 ml) of a carrier oil like coconut, jojoba, or sweet almond oil. For sensitive skin or for use on the face, stay at the lower end with 6 drops per tablespoon. Massage the blend into the affected area two to three times a day.
Coconut oil works well for larger areas like knees and shoulders because it spreads easily. Jojoba is a better match for facial skin because it closely resembles your skin’s natural oils and won’t clog pores. You can prepare a small batch in advance and store it in a dark glass bottle to preserve the oil’s potency.
What the Research Shows for Joint Pain
The strongest clinical evidence for frankincense and inflammation comes from studies on knee osteoarthritis using oral Boswellia serrata extract (a concentrated supplement, not the essential oil alone). In a randomized controlled trial published in Nutrients, people over 40 with persistent knee pain took a Boswellia extract daily for eight weeks. Their pain scores dropped from an average of 5.4 out of 10 to 2.4, a roughly 55 percent reduction. The placebo group, by comparison, only improved from 5.1 to 4.0.
Physical function also improved. Participants taking Boswellia reported better scores on a standard knee function assessment, and the combination of Boswellia with an omega-3 supplement showed the largest gains in physical function, with a 30 percent improvement over placebo. The takeaway: oral Boswellia supplements have measurable effects on joint inflammation and mobility over a period of weeks, not days. Most studies show meaningful results starting around the four-week mark.
If joint inflammation is your primary concern, an oral Boswellia serrata extract standardized for boswellic acid content will deliver these compounds more reliably than topical essential oil, which primarily affects the local tissue it contacts.
Topical Use for Skin Inflammation and Wounds
Frankincense oil also shows promise for inflammatory skin conditions and wound healing. In animal research published in Pharmaceuticals, wounds treated with frankincense essential oil had significantly lower levels of two key inflammatory signals, TNF-alpha and IL-1 beta, compared to both untreated wounds and those treated with a standard drug. The frankincense-treated group showed TNF-alpha levels of about 358 pg/mg versus 650 in the control group, nearly a 45 percent reduction.
Beyond reducing inflammation, the oil appeared to help wounds transition from the inflammatory phase into the healing phase more efficiently. Tissue samples showed improved formation of granulation tissue (the new connective tissue that fills a wound), less inflammatory cell buildup, and better skin regrowth. The compounds likely responsible include naturally occurring terpenoids in the oil that stimulate the cells responsible for rebuilding skin structure.
For minor skin inflammation like irritated patches, redness, or healing cuts, apply your diluted frankincense blend (6 drops per tablespoon of carrier oil) to the area once or twice daily. Avoid applying any essential oil to deep or open wounds.
Inhalation for General Inflammation
Diffusing frankincense oil or inhaling it directly is popular for stress-related inflammation, though the evidence here is less robust than for topical or oral use. Chronic stress raises cortisol, which over time promotes systemic inflammation. Frankincense aromatherapy is widely used to promote relaxation, but controlled studies specifically measuring inflammatory markers after inhalation are limited.
If you want to try this route, add 3 to 5 drops to a diffuser and run it for 30 to 60 minutes. You can also place a drop on your palms, rub them together, and cup your hands over your nose for a few deep breaths. This approach is best viewed as a complement to more direct methods rather than a standalone treatment for active inflammation.
Choosing the Right Species
Not all frankincense is the same. The resin comes from several Boswellia tree species, and their chemical profiles differ. Boswellia serrata contains both major boswellic acids in relatively balanced quantities: 3 to 4.7 percent of one key compound and 2.2 to 2.9 percent of AKBA, the most potent anti-inflammatory. Boswellia carterii has a higher concentration of AKBA (3.3 percent) but much less of the other boswellic acid (0.5 percent).
For anti-inflammatory purposes, Boswellia serrata is the most studied species and the one used in the majority of clinical trials. If you’re buying an essential oil, look for the Latin name on the label. If you’re buying an oral supplement, look for one standardized to contain a specific percentage of boswellic acids, typically 30 to 65 percent, which ensures a consistent dose.
Potential Interactions With Medications
Frankincense extracts are potent inhibitors of several liver enzymes responsible for metabolizing common medications. Research has found that extracts from multiple Boswellia species, including serrata, carterii, and sacra, broadly inhibit the major drug-processing enzymes in the cytochrome P450 family. This means frankincense can potentially slow your body’s ability to break down a wide range of drugs, including blood thinners, antidepressants, anti-seizure medications, and certain heart drugs.
This is primarily a concern with oral supplements, which deliver boswellic acids into your bloodstream at meaningful concentrations. Topical and inhaled use poses much less risk. If you take prescription medications regularly, check with your pharmacist before adding an oral Boswellia supplement, especially if your medications carry warnings about grapefruit interactions (these involve the same liver enzymes).
Practical Tips for Best Results
- Be patient. Clinical improvements in joint studies appeared over four to eight weeks. Frankincense is not a fast-acting pain reliever like ibuprofen.
- Patch test first. Apply your diluted blend to a small area of inner forearm skin and wait 24 hours before using it on a larger area.
- Store properly. Keep essential oils in dark glass bottles away from heat and sunlight. Oxidized oils are more likely to cause skin irritation.
- Combine approaches. For joint inflammation, using a topical blend on the affected area alongside an oral Boswellia supplement targets inflammation both locally and systemically.
- Pair with omega-3s. The clinical trial data suggests that combining Boswellia with omega-3 fatty acids produced the best improvements in physical function, likely because they target different inflammatory pathways.