Homemade hair oil with curry leaf, hibiscus and onion
How to make hair oil at home the way Indian families have for generations: the right base oil for your region, why herbs must be fried dry, how long homemade hair oil keeps, and what it can and cannot do.
Homemade hair oil is simple to make: warm a base oil such as coconut or sesame on a low flame, add clean, completely dry curry leaves, hibiscus, fenugreek, amla or sliced onion, and cook them gently until they turn crisp and stop sizzling. Cool the oil, strain it through muslin and store it in a dry glass bottle.
This cooked-oil method has been made in Indian homes for generations, with the base changing by region: coconut in Kerala, sesame in Tamil Nadu and Karnataka, mustard in the North. It is a lovely conditioning ritual, though, as you will see, it is not a hair-growth medicine.
At a glance
- Herbs are fried slowly in oil until crisp, which drives out the water that would make the oil spoil.
- Coconut is light, sesame medium, mustard heavier and pungent; a little castor adds body.
- Make small batches and use them within about a month.
- A lab study found coconut oil reduced protein loss from hair. Evidence that curry leaf, hibiscus or onion grow hair in people is thin.
Which base oil is best for homemade hair oil?
The best base is the oil your hair already likes, usually the one your family has always used.
| Base oil | Where it is traditional | How it feels | Good to know |
|---|---|---|---|
| Coconut | Kerala, coastal Karnataka, Tamil Nadu | Light; solid below about 24°C (75°F) | Has lab evidence on hair protein loss |
| Sesame (white or black) | Tamil Nadu, Karnataka, Andhra Pradesh | Medium, slightly warming | The classic oil of Ayurvedic head massage |
| Mustard | Punjab, Uttar Pradesh, Bihar, Bengal | Heavier, sharp smell | Can sting a sensitive scalp |
| Castor (add-in only) | Across India, mixed into other oils | Very thick and sticky | One part to four or five parts base oil, at most |
Coconut oil has the most research behind it. In a 2003 lab study on hair fibres, it reduced the protein hair loses during washing while sunflower and mineral oil did not, an effect linked to lauric acid, its main fat. That is about stronger lengths, not new hair. For single oils compared side by side, see which oil suits your hair.
Which herbs go into traditional hair oil?
Curry leaves, hibiscus, fenugreek and amla are the classic four, and onion is the newer favourite. One to three herbs is plenty.
- Curry leaves (kadi patta): the heart of curry leaves oil for hair, with a deep green colour and a toasty smell. Tradition links them with dark hair, but there is no good human evidence that they keep hair from greying.
- Hibiscus (gudhal, chembarathi): red flowers and leaves, the base of hibiscus oil for hair in many South Indian homes. Extracts increased hair growth in rats, but there are no reliable trials in people.
- Fenugreek (methi) and amla: crushed seeds add a nutty aroma. Use dried amla, the Indian gooseberry, because fresh amla is full of water and spits in hot oil.
- Onion: small onions or shallots, thinly sliced. They hold a lot of water, so they need the longest, gentlest cooking.
How to make hair oil at home, step by step
Fry dry herbs slowly in warm oil until crisp, then cool and strain. It takes about 30 minutes and makes about 200 ml (a little over 3/4 cup).
You will need: 200 ml base oil, a loosely packed cup of fresh curry leaves, 5 or 6 red hibiscus flowers with a few leaves, 1 teaspoon fenugreek seeds and, if you like, a few pieces of dried amla or half a small onion, thinly sliced.
- Wash the herbs and let them dry completely on a cloth in the shade, a few hours or overnight. Leftover water makes the oil spit and spoil sooner.
- Warm the oil in a heavy pan or iron kadai (a deep Indian wok) on the lowest flame for two minutes. It should never smoke.
- Add the fenugreek and amla, then after a minute the curry leaves, hibiscus and onion.
- Cook on a low flame for 10 to 15 minutes, stirring now and then, until the sizzling stops and the leaves crumble when pressed. Onion should be deep golden, never black.
- Switch off the flame, cover and leave for a few hours so the colour and scent settle.
- Strain through fine muslin into a completely dry glass bottle and write the date on it.
Keep the heat gentle. Unrefined coconut and sesame oils smoke at about 177°C (350°F), and you only need a soft bubble to drive the water out.
Can castor oil be added to homemade hair oil?
Yes, a little. Once the oil has cooled, stir in 1 tablespoon of castor oil for every 4 to 5 tablespoons; more makes it sticky and hard to wash out. Its reputation runs well ahead of the evidence, as our castor oil hair guide explains.
How long does homemade hair oil last?
About a month, sometimes two, if the herbs were fried completely dry and the bottle was clean and dry. Water, not the oil itself, is what spoils herbal oil.
Bits of leaf that still hold moisture can grow mould, and oil slowly turns rancid in air and light. Our base oils carry a best-before of about six months from pressing, but once herbs are cooked in, finish the oil within four to six weeks. Throw it away if it smells sour or paint-like, shows fuzzy spots or has water droplets at the bottom. Plain haziness in cold weather is normal, and coconut oil sets solid below about 24°C (75°F).
How should you use homemade hair oil?
Warm a tablespoon or two, massage it in, leave it for an hour or overnight, then wash it out.
- Amount: 1 tablespoon (15 ml) for short hair, 2 tablespoons (30 ml) for longer hair.
- Warming: stand the bottle in warm water for a few minutes and test a drop on your inner wrist.
- Massage: five unhurried minutes of fingertip circles, as in a classic champi head massage.
- Washing out: shampoo dry, oiled hair first, then add water; see washing hair oil out without stripping your hair.
- How often: once or twice a week is plenty.
Does onion oil really help hair growth?
There is no good evidence that onion oil, or any herbal oil, grows new hair on a thinning scalp.
The study behind the trend, from 2002, tested raw onion juice, not oil, on 23 people with alopecia areata, an autoimmune condition that causes round bald patches. Most saw hair grow back within two months, against 2 of 15 people using tap water. It was tiny, has not been repeated at scale, and says nothing about everyday thinning or pattern baldness. Heat also changes onion's sulphur compounds, so onion oil is not the juice that was tested.
What herbal oils do well is modest but real: they soften the lengths, reduce breakage when you comb and ease a dry scalp. If you are losing hair suddenly or in patches, see a dermatologist, because thyroid problems, low iron and hormonal changes all need a proper diagnosis.
Who should be careful with homemade hair oil?
- Patch test: dab a little behind the ear and wait 24 hours. Stop if you see redness, itching or bumps.
- Sensitive scalps: mustard oil and onion can sting. Start with coconut or sesame.
- Scalp conditions: heavy oils can worsen greasy, flaky dandruff (seborrhoeic dermatitis) in some people. Skip broken or infected skin and see a doctor.
- Children and pregnancy: use plain coconut or sesame oil for children, and check with your doctor before trying herbal preparations in pregnancy.
- Hot oil: never leave the pan unattended, keep children away from the stove and keep oil out of your eyes.
Making it with our oils
If you want to try it, our Truly Cold Pressed coconut oil and Truly Cold Pressed black sesame oil are pressed slowly in a wooden ghaani and left unrefined, so they bring their own gentle aroma to the finished oil. A spoonful of our Truly Cold Pressed castor oil, stirred in after cooking, adds body; like all our castor oil, it is for external use only.
The bottom line
Homemade herbal hair oil is simple: dry herbs, a low flame, patience and a clean bottle. Choose a base oil your hair likes, make small batches and enjoy it as a conditioning ritual. Do not expect it to grow hair; if you are worried about hair loss, a dermatologist is the right next step.
Frequently asked questions
Can I make curry leaves oil for hair with dried leaves?
Yes. Dried curry leaves are easier because they hold no water, so the oil will not spit and keeps a little longer. Use about half the amount you would use fresh and cook them for only five to eight minutes on a low flame, as dried leaves darken and burn faster.
Does hibiscus oil for hair really work?
It conditions, but there is no good evidence that it grows hair in people. Hibiscus extracts increased hair growth in studies on rats, which cannot simply be applied to human scalps. What hibiscus adds to a cooked oil is colour, a mild scent and a pleasant ritual; the base oil does most of the softening.
Should I apply hair oil to wet or dry hair?
Dry or barely damp hair is best. Oil and water do not mix, so oil spread on wet hair sits on the surface and is harder to work into the scalp. If you oil after washing, use only a few drops on the ends of towel-dried hair to tame frizz.
Can I leave homemade hair oil on overnight?
Yes, if your scalp is comfortable with it. Cover your pillow with an old towel, because herbal oils stain. If you notice itching, small bumps or more dandruff after overnight oiling, cut it back to an hour or two before washing instead.
Is homemade hair oil better than store-bought?
It is fresher, has no added fragrance and lets you choose every ingredient, which many people prefer. It does not work in some special way that bottled oils cannot. The quality of the base oil and how regularly you use it matter more than whether you cooked it yourself.
Sources
- Mineral, sunflower and coconut oil and hair protein loss, Journal of Cosmetic Science, 2003
- Sharquie et al., onion juice in alopecia areata, Journal of Dermatology, 2002
- Hair growth activity of Hibiscus rosa-sinensis in rats, Biosciences Biotechnology Research Asia, 2005
- Castor oil for hair, Medical News Today, 2025
