Lavender Oil for Hair: Benefits, Evidence and How to Use It Safely
Last reviewed on 2 August 2026. We review our treatment guides every six months to keep them accurate.
Lavender oil is one of the best-known essential oils, and most searches for lavender oil for hair ask the same thing: does it actually help hair growth, or is it mainly a calming, nice-smelling scalp oil? The honest answer is that the evidence for hair growth is thin. The popular claim rests almost entirely on a single 2016 study in mice, with no human trial to back it up, so any hair-growth benefit in people is unproven. What lavender oil reliably offers is a pleasant, relaxing scent, along with some laboratory antimicrobial and anti-inflammatory activity. This guide sets out what the research does and does not show, the realistic benefits, how to dilute and use lavender oil for hair, and how to use it safely.
What Is Lavender Oil?
Lavender oil is an essential oil steam-distilled from the flowers of the lavender plant (Lavandula angustifolia). It is prized mainly for its floral, calming scent and has been used for centuries in aromatherapy and perfumery. Like all essential oils it is highly concentrated, so it is meant to be diluted in a carrier oil rather than applied neat to the skin. As DermNet notes, neat, undiluted essential oils should not be applied directly to the skin, as this can lead to irritation and sensitisation.
Does Lavender Oil Help Hair Growth?
This is the question behind most searches, so it deserves a straight answer. The idea that lavender oil helps hair growth comes almost entirely from one 2016 study in the journal Toxicological Research. Researchers applied lavender oil to the shaved backs of mice, five times a week for four weeks, and compared it with saline, jojoba oil and minoxidil (a proven hair-loss treatment). The mice given lavender oil grew more hair, with a greater number of hair follicles, deeper follicles and a thicker skin layer, results that were broadly comparable to the minoxidil group.
Those findings are interesting, but they need to be read with real caution. This was a single study carried out in mice, not people. Mouse hair grows in coordinated cycles that do not match human hair, so a strong result in mice often does not carry across to humans. There has been no human trial to show that lavender oil regrows hair or slows hair loss. In short, the hair-growth claim is genuinely unproven in people, and it is not accurate to describe lavender oil as a treatment for pattern baldness.
The Benefits of Lavender Oil for Hair
The realistic benefits are mostly sensory and cosmetic: a calming scent, plus some laboratory antimicrobial and anti-inflammatory activity of uncertain everyday value.
Setting the unproven growth claim aside, lavender oil has some realistic, mostly cosmetic and sensory, appeal for hair and scalp care:
- A calming, pleasant scent: lavender's floral aroma is widely used in aromatherapy for relaxation, and this is the main reason many people enjoy it in a scalp oil, hair mask or hair product.
- Laboratory antimicrobial and anti-inflammatory activity: in laboratory tests lavender oil shows some antibacterial, antifungal and anti-inflammatory effects. Whether this translates into a meaningful benefit for the scalp in everyday use has not been established in people.
- A carrier for a relaxing scalp massage: diluted in a carrier oil it can be pleasant to massage into the scalp, though the massage itself, rather than the lavender, is likely doing most of the work.
What the evidence does not support is lavender oil as a stand-alone treatment for hair loss. Treat it as a pleasant, relaxing scalp oil rather than a medicine.
How to Use Lavender Oil for Hair
Because lavender essential oil is concentrated, the single most important rule is to dilute it. DermNet advises against applying neat, undiluted essential oils to the skin, as this can cause irritation and lead to sensitisation. A sensible approach is:
- Dilute it in a carrier oil: mix a few drops of lavender oil into a carrier such as coconut, jojoba, almond or olive oil. A low concentration, in the region of a few drops per teaspoon of carrier oil, is plenty. Never apply it neat.
- Patch test first: dab a little of the diluted blend on a small area, such as the inner forearm or behind the ear, and wait about 24 hours to check for redness, itching or a burning feeling before using it on your scalp.
- Massage gently into the scalp: apply the diluted oil and massage for a few minutes, leave it for a short time, then wash it out. Keep it well away from the eyes.
- Or add a drop or two to shampoo: stirring a small amount into your usual shampoo or conditioner is a gentler way to enjoy the scent without a strong leave-on dose.
A little goes a long way. If you feel any burning, stinging or itching, rinse it out.
Is Lavender Oil Safe? Side Effects and Precautions
Used sensibly and well diluted, lavender oil is generally well tolerated, but as a concentrated essential oil it carries a few risks worth knowing:
- Skin irritation: applied neat or too strong, lavender oil can irritate the skin and cause redness, stinging or a burning feeling. This is exactly why dilution matters.
- Allergic contact dermatitis: some people become allergic to lavender oil or its fragrance components, developing itching, redness, scaling or a rash. DermNet reports that allergic contact dermatitis to essential oils causes these symptoms, and that people allergic to one oil are often sensitive to several.
- Eyes and broken skin: keep lavender oil away from the eyes and from broken or inflamed skin, where it can sting and irritate. If it gets into the eyes, rinse thoroughly with cool water.
- Pregnancy, young children and skin conditions: if you are pregnant or breastfeeding, using it on a child, or have a scalp condition such as eczema or psoriasis, check with a pharmacist or your doctor first. Essential oils should be used with particular care around babies and young children.
If you have sensitive skin or a known fragrance allergy, take extra care, and stop using lavender oil if your skin reacts.
Lavender Oil Compared With Other Options
Lavender oil is one of several plant oils promoted for hair. Peppermint oil and rosemary oil are the more commonly studied comparators, while oils such as avocado oil are used mainly for conditioning. You can read more about the wider group of natural options in our guide to the best natural DHT blockers. None of these oils has the weight of evidence behind it that the standard medical treatments do.
According to the NHS, the two main treatments for male pattern baldness are finasteride and minoxidil, with minoxidil also used for female pattern hair loss (the NHS notes that women should not use finasteride). Any medicine should be discussed with your doctor.
The Bottom Line
Lavender oil is a calming, pleasant-smelling scalp oil with some laboratory antimicrobial and anti-inflammatory activity, and one mouse study hints at a possible effect on hair growth. But there is no human evidence that it regrows hair or treats hair loss, so it is best enjoyed for its scent and the relaxation it brings rather than relied on as a treatment. If you are genuinely worried about thinning or shedding, the NHS advises seeing a GP to find the cause, as some hair loss is temporary and treatable once the reason is known.
Frequently Asked Questions
Does lavender oil help hair growth?
The claim comes from a single 2016 mouse study, in which lavender oil produced more and deeper hair follicles in mice, broadly comparable to minoxidil. There has been no human trial, so in people the hair-growth benefit is unproven. It is best thought of as a pleasant scalp oil rather than a proven hair-loss treatment.
What are the benefits of lavender oil for hair?
Realistically, the benefits are largely sensory and cosmetic: a calming, relaxing scent, plus some laboratory antimicrobial and anti-inflammatory activity of uncertain everyday value. Any effect on actual hair growth in humans is not established.
How do I use lavender oil for hair?
Always dilute a few drops of lavender oil in a carrier oil such as coconut, jojoba or almond oil, then massage it gently into the scalp and wash it out after a short time. Patch test the blend first, keep it away from the eyes, and never apply lavender oil neat.
Is lavender oil safe to use on the scalp?
For most people, well-diluted lavender oil is well tolerated on the scalp. Because it is concentrated, it can cause irritation or an allergic reaction if used too strong or neat, so dilute it, patch test first, keep it away from the eyes, and stop using it if your skin reacts. Take extra care in pregnancy and around young children.
Can lavender oil regrow hair?
There is no human evidence that lavender oil regrows hair or reverses hair loss. The only supportive research is a single mouse study. If you are worried about hair loss, the NHS advises seeing a GP to find the cause, as some hair loss is temporary and treatable.
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