Myrtle essential oil is a versatile, mild oil you can diffuse for respiratory support, dilute for skincare, or blend for relaxation. It comes from the leaves and twigs of the Mediterranean myrtle plant and has a fresh, slightly sweet, herbaceous scent that sits somewhere between eucalyptus and lavender. Here’s how to use it effectively across its most popular applications.
Diffusing for Respiratory Support
Myrtle oil has a long history of use for respiratory complaints, including coughs, bronchial congestion, and sinus issues. One of its key compounds, 1,8-cineole, is the same ingredient that gives eucalyptus its clearing, decongestant quality. Myrtle delivers a gentler version of that effect, making it a good option if you find eucalyptus too sharp or intense.
To diffuse myrtle oil, add 3 to 5 drops to a standard ultrasonic water-based diffuser. Run it for up to 30 minutes at a time, up to three sessions per day. This is enough to fill a room without overwhelming the space. If you’re using it specifically for congestion or a cough, try diffusing it in the bedroom before sleep or in a smaller room like a bathroom where the concentration stays higher.
For a more direct approach, you can do a simple steam inhalation. Add 2 to 3 drops of myrtle oil to a bowl of hot (not boiling) water, drape a towel over your head, close your eyes, and breathe in the steam for 5 to 10 minutes. Inhalation therapy with essential oils has been used traditionally for both acute and chronic bronchitis as well as sinusitis.
Topical Use for Skin
Myrtle oil has been used around the Mediterranean since the Middle Ages for acne, oily skin, and enlarged pores. A clinical trial on Korean women confirmed that myrtle essential oil reduced redness, helped clear excess oil and dead skin cells, and showed antibacterial activity on facial skin. The researchers noted it was safe and soothing, describing it as a mild oil with calming properties, which is relatively rare among essential oils that also fight bacteria.
You should always dilute myrtle oil before applying it to skin. A standard dilution is 2 to 3 drops of myrtle oil per teaspoon (about 5 mL) of carrier oil. Jojoba oil works well for acne-prone skin because it closely resembles your skin’s natural oil and won’t clog pores. Grapeseed oil is another lightweight option. For a simple acne spot treatment, mix 1 drop of myrtle oil into a small amount of carrier oil on your fingertip and dab it onto blemishes.
You can also add myrtle oil to your existing skincare routine. A few drops mixed into an unscented moisturizer or clay mask can help with oiliness and breakouts. If you’re using it on your face for the first time, patch test on a small area of your inner forearm and wait 24 hours to check for irritation.
Blending for Relaxation and Sleep
Myrtle oil has mild sedative properties that can help you wind down, though it works differently than you might expect. Research on mice found that myrtle essential oil didn’t knock subjects out on its own but significantly enhanced and prolonged sleep once it was already underway. It also showed measurable central nervous system depressant activity, meaning it genuinely slows down neural activity rather than just smelling pleasant. In traditional Ethiopian medicine, the plant has been used as a sedative for generations.
For a calming evening blend, combine 2 drops of myrtle with 2 drops of lavender in your diffuser. The two complement each other well: lavender is a stronger sedative, while myrtle adds respiratory-clearing benefits that can make nighttime breathing easier. You can also blend myrtle with cedarwood or bergamot for a warmer, woodsier bedtime aroma.
For a relaxing bath, mix 4 to 6 drops of myrtle oil into a tablespoon of carrier oil or a cup of Epsom salts before adding it to the water. Essential oils don’t dissolve in water on their own, so without a dispersant they’ll float on the surface and can irritate skin at full concentration.
What Makes Myrtle Oil Unique
Myrtle oil’s chemical makeup varies significantly depending on where the plant was grown and when it was harvested. The major active compounds include alpha-pinene (4 to 39%), 1,8-cineole (6 to 62%), linalool (up to 37%), and myrtenyl acetate (up to 33%). This means two bottles of myrtle oil from different regions can smell and perform quite differently. Mediterranean-sourced oils tend to be higher in the compounds associated with respiratory benefits.
Monoterpenes, the largest class of compounds in myrtle oil, typically make up 65 to 89% of the oil. These are the lightweight, volatile molecules responsible for the oil’s fresh scent, its ability to penetrate quickly when inhaled, and much of its antibacterial activity.
Safety Considerations
Myrtle is generally considered one of the gentler essential oils, but a few precautions apply. Certain myrtle species (specifically anise myrtle, which is a different plant from common myrtle) contain high levels of a compound called anethole that can affect reproductive hormones. If you’re pregnant or breastfeeding, make sure you’re purchasing common myrtle (Myrtus communis) and not anise myrtle, and even then, use it conservatively during pregnancy, sticking to occasional diffusion rather than topical application.
For children under 10, keep myrtle oil to diffusion only, and use fewer drops (1 to 2) in a well-ventilated room. Oils high in 1,8-cineole can occasionally cause breathing difficulty in very young children when applied near the face, so avoid topical use on or near the nose and mouth of small kids.
No documented drug interactions exist specifically for myrtle essential oil in human studies. Interestingly, animal research has shown that myrtle extracts actually protected the liver from damage caused by toxins, suggesting it’s not harsh on your system. That said, if you’re on medication and want to use any essential oil internally (in capsule form, for example), that’s a conversation worth having with a pharmacist, since many essential oil compounds are processed by the liver.
Choosing and Storing Your Oil
Look for oil labeled Myrtus communis, sourced from leaves rather than berries. Leaf oil is more widely available, better studied, and tends to have a more consistent chemical profile. The oil should come in a dark glass bottle, since light degrades essential oils quickly. Store it in a cool, dark place, and expect it to last about 2 to 3 years before the scent starts to flatten and the therapeutic compounds begin to break down.
If the price seems too good to be true, it probably is. Pure myrtle oil requires a large volume of plant material to produce. A 10 mL bottle from a reputable supplier typically runs between $10 and $20. Oils sold for a fraction of that are often diluted or synthetic, which defeats the purpose if you’re using it for skin or respiratory benefits.