Tea tree essential oil (from the leaves of the Melaleuca alternifolia) is well known for its antimicrobial and anti-inflammatory properties. While it has some evidence-backed uses, it’s important to use it safely—never ingest it, and always dilute it before applying it to the skin.

Here are some of its most common uses:

Skin Care

• Acne: May help reduce mild to moderate acne when diluted (typically around 5% concentration).
• Minor cuts and scrapes: Can help keep the area clean when properly diluted.
• Bug bites: May reduce itching and irritation.
• Athlete’s foot: Can help treat fungal infections of the feet.
• Toenail fungus: May improve mild fungal nail infections, though treatment often takes months.
• Dandruff: Tea tree shampoos containing about 5% tea tree oil may help reduce dandruff and scalp itching.

Household Cleaning

• Add a few drops to homemade surface cleaners for its antimicrobial properties.
• Use in garbage cans, diaper pails, or gym bags to help reduce odors.
• Add to laundry (following your washing machine manufacturer’s guidance) to help freshen towels and workout clothes.

Personal Care

• Deodorant ingredient in DIY deodorants.
• Foot soak (a few diluted drops in a basin of warm water).
• Added to shampoo to promote a healthy scalp.

Around the Home

• Mold and mildew cleaner for non-porous surfaces.
• Freshen musty areas by adding a few drops to a spray bottle with water and a small amount of soap or alcohol to help disperse the oil.

Safety Tips

• Never swallow tea tree oil. It is toxic if ingested.
• Always dilute with a carrier oil (such as coconut, jojoba, or sweet almond oil) before applying to skin.
• Perform a patch test on a small area of skin before wider use.
• Keep away from your eyes and other sensitive areas.
• Store out of reach of children.

Pets

Tea tree oil can be toxic to dogs and cats, especially if applied undiluted or ingested. Avoid using it on pets unless specifically directed by a veterinarian.

When to See a Healthcare Provider

If you have a severe skin infection, persistent fungal infection, or experience significant irritation or an allergic reaction after using tea tree oil, discontinue use and consult a healthcare professional.

Tea tree oil is one of the most versatile essential oils, but it works best as a complementary treatment rather than a replacement for prescribed medications when treating more serious infections.