Tea Tree Oil for Hair

Tea tree oil has been used as an ingredient for centuries. Nowadays, it shows up in personal care items ranging from acne to athlete’s foot. But is tea tree oil good for hair, too? 

In some cases, yes. Tea tree oil may help with issues like dandruff, scalp acne, and even head lice. Tea tree oil for hair loss? Let’s just say the evidence so far is mixed.

As with so many natural remedies, some of the claims around tea tree oil for hair are a little exaggerated, to say the least. While there are a number of tea tree oil uses for hair, it’s definitely not a cure-all — and contrary to what you may have heard, it’s not a fix for male pattern baldness. 

So before you add this essential oil to your hair care routine, let’s take a closer look at what tea tree oil is, what kind of benefits it promotes, and how it can be used to foster healthy hair. We’ll also go over some alternatives with more promise, science-backed hair loss treatments.

Tea tree oil is an oil that comes from tea trees — also known as the Melaleuca alternifolia plant.  

Traditionally used by the Aboriginal people of Australia, the antiseptic oil has become popular around the world. It’s now commonly used in skincare and hair products. Maybe you’ve seen tea tree oil shampoos or used it as an essential oil.

Some research has found that tea tree oil has anti-inflammatory, antifungal, and antibacterial properties. In dermatology, tea tree oil is used to treat issues like acne, athlete’s foot, and skin infections. You might even find tea tree oil in mouthwash, since research shows it could help treat gingivitis. 

It’s definitely a versatile ingredient — but does tea tree oil help hair growth? Let’s take a look. 

We’ll be blunt: While you’ll find tea tree oil in shampoos, conditioners, and various hair treatments, the scientific evidence connecting tea tree oil to hair and scalp health is somewhat limited. A few studies have some promising conclusions, but there’s still a lot we don’t know when it comes to what tea tree oil does for hair.  

A 2024 review of 47 separate studies that explored the benefits of essential oils for inflammatory scalp conditions found that, in general, the specific benefits of particular oils is still largely unknown. 

While more research is needed, here’s what we do know about potential tea tree oil uses for hair so far. 

Tea Tree Oil for Dandruff

Dandruff is a fairly common scalp condition characterized by a flaky, dry scalp. For people with dandruff, finding the right scalp treatment to get rid of dandruff can be a big challenge.

In one older study, participants using shampoo containing 5 percent tea tree oil were evaluated over a one-month period. Compared to a placebo, those using the tea tree oil shampoo showed improvements in dandruff severity, itchy scalp, and greasiness.

Additionally, some research shows that tea tree oil can be somewhat effective at reducing seborrheic dermatitis, the form of eczema that’s usually responsible for dandruff. 

Is this conclusive evidence that it’s the best treatment for dandruff? Not exactly. But it may be worth a try if you’re looking for a way to get rid of flaking and itchiness.  

Head Lice

You might find some tea tree oil shampoos that are promoted developed for treating head lice. The studies on tea tree oil for head lice are few and far between, but they’re fairly promising.

One study found that tea tree oil can kill lice and reduce the number of nits (lice eggs) that hatch. Another study found a product containing tea tree and lavender oil effectively treated lice in children.  

Tea tree oil might also prevent head lice, which is typically very contagious. In a study that looked at a few different products for lice, including tea tree oil, lavender oil, and peppermint oil, researchers concluded that tea tree oil was highly effective at treating lice, and also at repelling lice — thus preventing infestations.  

After all that reading about lice, you might feel some phantom itches. But the bottom line? Tea tree oil does seem to be effective at treating and preventing lice.

Hair Loss and Androgenic Alopecia

You may have heard that certain hair oils can be used to treat androgenic alopecia, also called male pattern baldness. For example, rosemary oil and castor oil are often said to stimulate hair growth. But does tea tree oil help with hair growth?  

There’s very little evidence that tea tree oil is an effective hair loss treatment. Findings from a 2024 study published in Clinical, Cosmetic, and Investigational Dermatology suggest that tea tree oil outperformed certain other natural hair loss remedies, but we need more science to better understand the benefits and optimal use of tea tree oil.

One study found that tea tree oil could form a part of a successful hair loss treatment — but not necessarily on its own. According to the research, the highly effective FDA-approved hair loss treatment minoxidil might be even more effective when combined with two things: diclofenac (a nonsteroidal anti-inflammatory drug) and tea tree oil. This combination treatment was found to be “significantly superior” to minoxidil alone and a placebo.

While this study sounds promising, keep in mind that it was quite small: Only 32 men participated. We’ll need more evidence before we can confidently draw any conclusions about using tea tree oil for hair growth. 

Antimicrobial and Antifungal Benefits

A recent review found that tea tree oil might be good for treating acne because of its antibacterial, antioxidant, and anti-inflammatory properties. Further, the review highlighted that a fair number of studies show tea tree oil could improve acne.

However, the researchers also noted that more robust studies are needed before we can conclusively say tea tree oil can combat acne.

You might assume that since it’s natural, tea tree oil is super safe to use. Bear in mind, though, that natural does not automatically mean safe — the truth is that tea tree oil can be safe to use if it’s used correctly. That goes for every herbal supplement and natural remedy on the market, too.

Keep the following in mind when using tea tree oil:

• Never drink tea tree oil. It can be toxic if swallowed, especially in large doses.

• Before using tea tree oil on your scalp, do a patch test. Apply just a few drops of tea tree oil to see how your skin reacts before applying it all over.

• Stop using tea tree oil immediately if you think you’re having an allergic reaction.

According to the National Center for Complementary and Integrative Health, some people use tea tree oil without problems, while others find that it can cause side effects like itchy, irritated skin.

Undiluted, essential oils can be quite strong and irritating, especially if you have sensitive skin. To reduce irritation, you can mix essential oil with a hair-friendly carrier oil. Popular natural oils for hair include jojoba oil, coconut oil, and almond oil.

You also could save yourself some time and use a specialized tea tree oil shampoo, hair mask, or scalp treatment. You might be able to find an appropriate product in the hair care aisle at your local pharmacy or natural wellness store. 

Tea tree oil has its uses, but it also has its drawbacks. Beyond making your hair smell like mosquito repellent, it can irritate your scalp. 

And, perhaps most importantly, the science on its effectiveness is pretty thin. 

No matter what you’re using tea tree oil to treat, we can almost guarantee you that there’s a better-proven alternative.

For hair loss, for instance, you can use:

• Finasteride. Finasteride is a topical and oral medication that treats androgenic alopecia by blocking the production of DHT, a hormone associated with hair loss.

• Minoxidil. Minoxidil (in the form of minoxidil foam or minoxidil solution) is a topical medication that promotes hair growth by increasing blood flow to your hair follicles. An oral version is also available. There are also a variety of minoxidil alternatives available, too.

• Medicated topical spray. You might consider a combination application of FDA-approved medications, like our topical finasteride & minoxidil spray.

• Hair loss shampoo. For boosting hair growth, you can try our thickening shampoo with saw palmetto. Unlike tea tree oil, saw palmetto is somewhat proven to reduce hair loss associated with male pattern baldness.  

• For dandruff, you might try medicated shampoos. Our dandruff detox shampoo (with 1% pyrithione zinc and salicylic acid) can promote a healthy scalp, free of dryness and flaking.

Okay, so what you really want to know: Does tea tree oil help hair growth? Should you be reaching for this multipurpose oil the second you notice a receding hairline or increased hair fall? Here’s the takeaway:

• Tea tree oil has some uses for hair care. Specifically, there’s some research suggesting that tea tree oil helps with hair lice, scalp ringworm, and possibly dandruff. 

• But we need more proof. The research on using tea tree oil for hair growth is terribly thin — and despite what you may have heard, there’s little proof it can help with male pattern hair loss.  

• Be careful when using tea tree oil. Though some people tolerate it well, others experience skin irritation when using pure essential oils. Instead, opt for a tea tree oil shampoo and do a patch test before using it.

Want a better way to deal with male pattern baldness or an itchy scalp? Try talking to a healthcare provider online. From the comfort of your own home, you can glean expert medical advice on getting the luscious, healthy hair of your dreams.