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10 Benefits of Onion Juice for Hair Growth

Onion juices are said to bring several benefits to the table, especially for hair growth. Since it contains sulfur, research suggests that it helps reduce hair thinning and breakage. Its set of advantages is the reason why people invest in onion hair shampoos and onion hair oils.

Apart from the ready-made solutions, one can also make the most of onions by using onion juice. Don’t worry; along with the benefits, we have also explained the best way to use onion juice for hair growth without subjecting you to its strong odor.

Why should you be using onion juice?

Benefits of Onion Juice

It’s completely natural. You don’t have to worry about any artificial ingredients that other big brands often use.

Since it is fairly cheap, onion juice doesn’t force you to empty your pockets just because to want healthier, happier hair.

It’s harmless and pain-free! There aren’t any major side effects of onion juice compared to artificial products full of nasty chemicals.

You control what you put in your hair. It gives you full authority and knowledge of what you will be using on your beloved hair.

You can conveniently make it at home. You don’t have to go around looking for products, spending hours finding the right one, and then going through the taxing process of doing it all again if it doesn’t suit you.


Scientific Proof of its Effectiveness

Onion Juice, A New Topical Treatment for Alopecia Areata, a study published in 2002, provides evidence of the effectiveness of onion juice.

Alopecia Areata is a patchy, non-scarring hair loss condition. The experiment included 23 patients. After applying onion juice twice a day for six weeks, hair regrowth was seen in 20 patients.

Another group of 15 patients was a tap-water treated-control group. This group only showed hair regrowth in 2 patients at 8 weeks.

This experiment was extremely beneficial as it proved what only some were ready to believe, i.e., the effectiveness of onion juice.


Benefits of Onion Juice for Hair Growth

Let us dive right into the various benefits of using onion juice for your hair.

Nourishes hair follicles

Nourishes hair follicles


Hair follicles are the structures present in the outer layer of the skin. It is from these tiny sacs that hair spurt out. Hence, hair growth greatly depends on the health of your hair follicles.

If your hair follicles are damaged, you will see a considerable inhibition in the growth of new hair. It will also take your hair a significantly longer time to increase in length if your hair follicles have been damaged.

Onion juice is remarkable for nourishing your hair follicles because of its rich sulfur content. It also restores nutrients to your scalp. This not only promotes better hair growth but also gives you healthier hair right from the base. By fixing the problem at the roots, you are ensuring that your hair is well-nourished right up to the ends.


Moisturizes dry scalp

Moisturizes dry scalp


You know your scalp is dry if you experience constant itching and irritation and have a flaky scalp. But unfortunately, dryness doesn’t just end here.

Did you know that a dehydrated scalp leads to hair loss?

It can be frustrating and make you super uncomfortable, not to mention the obvious damage they cause to your appearance and self-confidence. Dryness can also vastly hinder hair growth and damage your hair.

Onion juice contains many compounds that help hydrate your scalp. They provide deep moisturizing that is like the natural oil produced by your skin. It fights back dryness in an all-natural way with compounds like kaempferol and quercetin. Hence, it is a great way to moisturize your scalp.


Hydrates dry, brittle hair

Hydrates dry, brittle hair


It can get very annoying to have dry hair. These are not only harder to maintain but also get extremely dirty. The texture of dry hair turns brittle and coarse, which also increases the risk of breakage. Dry hair never settles and looks super untamed. Dryness is also very unhealthy as it causes hair to lose its natural beauty.

Onion juice, as mentioned, contains compounds like kaempferol and quercetin that greatly influence the moisture in your hair. They work on each strand and make them hydrated and strong.


Reduces hair breakage and thinning

Reduces hair breakage and thinning


Hair breakage can make your hair look frizzy and rough. It can also make styling your hair difficult if left unattended for a long time. Thinning reduces the overall volume of your hair.

Due to its sulfur content again, onion juice nourishes your hair and helps protect them from damage. This deep nourishment effectively prevents hair breakage and thinning. It strengthens your hair and fights back hair damage.


Treats and prevents scalp infections

Fights dandruff


Your scalp can be infected if any fungus or bacteria enter it through the hair follicles and damaged parts of your skin. While scalp infections can happen to anyone, skin conditions like eczema and psoriasis can often cause them. These can cause significant discomfort and irritation and also significantly deter the health of your hair. Curing these infections can be complicated as some chemical-based products often make them worse.

Onion juice has antifungal and antibacterial properties that excellently treat and prevent scalp infections. It also helps control the tremendous amount of hair loss that skin infections cause.


Reversespremature greying

You know how much early greying sucks if you have experienced it. Other than the social problems it brings along, there’s always a fear of not being able to do anything about it. But what if you could do something to reverse premature greying and get back your old hair?

Onion juice contains an antioxidant compound called catalase. This compound reduces the amount of hydrogen peroxide at the roots of your hair. This reduction is widely known to prevent and reverse grey hair.


It makes hair soft and shiny.

Onion juice does so by the intense nourishment it provides. It also brings your hair back to health through its enriching compounds. This care provides your hair with a good shine and smoothness, both of which become permanent with daily use. This smoothness not only gives you a better appearance but also makes it easier to handle and groom them.


Fights dandruff


Fights dandruff

Dandruff is one of the most persistent problems faced by a vast majority of people. Dandruff can cause significant discomfort and prove to be highly irritating. Other than the itchiness it causes, dandruff also causes a considerable amount of hair loss. It also makes social life difficult for you due to the harm it causes to your appearance.

Onion oil has antifungal properties that greatly benefit your hair in many aspects. These properties help eliminate the fungi that are responsible for causing dandruff called Malassezia furfur. Killing these fungi clears your scalp from dandruff and prevents a great deal of hair loss.


Stimulates blood circulation

It is believed that applying onion juice can stimulate the circulation of blood. By ensuring a good blood flow, onion juice also improves hair growth. Onion juice contains anti-inflammatory and antioxidant properties along with vasodilatory properties that widen the blood vessels. These properties ease blood flow to the scalp.


Treats hair loss

Treats hair loss


As mentioned before, there is scientific evidence that onion juice helps with hair loss conditions for Alopecia areata. It is also known to prevent hair loss. Even though it is not a cure for conditions like Alopecia, it might still improve the condition of hair loss. Onion juice helps nourish your scalp and hair, moisturize them, and improve blood circulation. All these features of onion juice mentioned before help to treat hair loss.


How to use onion juice?

How to make onion juice?

There are many ways to benefit from onion juice. You can use it with or without another ingredient, though the former is always better.

It is suggested to use onion oil with additional components mainly to reduce its intensity, concentration, and smell. Though not common, if your skin is sensitive to the onion and you sense slight itching, it would be wiser not to use it directly.

Here are a few homemade remedies.

  1. Onion juice
  • Step 1: Peel a few onions and cut them into 4 parts
  • Step 2: Blend these pieces together in a juicer or blender
  • Step 3: Add a little water and filter out the juice so no chunks of onion remain
  • Step 4: Apply this juice to your scalp and rub a little on your hair
  • Step 5: Let the onion juice rest for around 10-15 minutes
  • Step 6: Wash it off well using a mild shampoo
  • Step 7: Apply some fragrant conditioner or essential oil to combat the strong smell


  1. Onion juice + Coconut oil
  • Step 1: Take some Onion juice, coconut oil and.
  • Step 2: Stir the mixture well.
  • Step 3: Apply this mixture to your scalp and hair.
  • Step 4: Massage it well so it spreads to all parts of your scalp, and your hair follicles easily absorb it.
  • Step 5: Leave it on for about 30-45 minutes.
  • Step 6: Wash your hair properly with a mild shampoo.
  • Step 7: Apply conditioner if needed.

Coconut oil contains fatty acids like lauric acid and capric acid.  These fatty acids are healthy and contain anti-inflammatory, antifungal, and antibacterial properties, which help in fighting fungus and bacteria from your scalp and keeping it healthy.

Using Coconut oil also gives the benefit of being able to massage your scalp, which isn’t possible otherwise.

You can also use Tea Tree Essential Oil to ease the blood circulation in the scalp and prevents infections. It also effectively unclogs the pores and supports hair growth.


  1. Onion juice + Honey
  • Step 1: Take equal parts of onion juice and honey.
  • Step 2: Mix them well until you get a smooth paste.
  • Step 3: Apply the mixture to your scalp and massage softly.
  • Step 4: Keep it on for about 30 minutes.
  • Step 5: Wash thoroughly with a mild shampoo.

Honey is excellent in moisturizing and nourishing hair. It is both an emollient and humectant. The former smoothens hair follicles and adds shine to your hair. The latter bonds with water molecules and moisturizes the dry hair.


  1. Onion juice + Yogurt
  • Step 1: Add a little Yogurt to onion juice and mix well.
  • Step 2: Apply the mixture to your scalp and let it rest for an hour.
  • Step 3: Wash it off thoroughly with a mild shampoo.

Yogurt has antifungal properties which fight dandruff. It balances the pH of your scalp, soothes it, and moisturizes your hair. It prevents hair fall and also adds luster to your hair.

A few other remedies you can try out:

  • Onion juice + Castor oil
  • Onion juice + Eggs
  • Onion juice + Ginger juice
  • Onion juice + Olive oil


FAQs on Onion juice for hair growth!

For how long can I keep it on?

Keep it on for at least 30 mins, considering you are using it with carrier oil. Please do not leave it on for too long. Never use it overnight, as excessive exposure can cause irritation and cause hair fall. This would take away the purpose behind using it and would harm, not benefit. If you’re big on overnight hair oils, dilute it well with coconut oil or any of your favorite carrier oil to minimize damage.


How often can I use onion juice for my hair?

Drawing conclusions from the hair growth experiment mentioned initially, and it is safe to use onion juice twice a day. While this may seem tempting, being cautious is always better. So, start slow a few times a week and gradually shift to daily use according to your needs.


What if onion juice irritates my skin?

If you have sensitive skin, onion juice will likely irritate you. If irritation is very mild, you can try increasing the amount of carrier oil you add and try it again. You can also use Aloe Vera to reduce irritation. If these symptoms persist, stop using Onion oil immediately.


Can I use onion juice if I’m allergic to onions?

You shouldn’t experiment with onions if you are allergic to them. Look for alternatives that work well for you.


How to wash onion juice off my hair and scalp?

Always wash off onion juice with a mild shampoo. If you feel like your hair still stinks like an onion after a thorough wash, you can use Apple Cedar Vinegar. ACV is known to cleanse any residue without drying out the hair. It doesn’t matter if you use hot or cold water to wash onion juice off. However, always remember to use cold water if your mixture contains egg, as hot water would cook the egg while it’s on your hair and create a mess.

We hope we’ve helped you understand and appreciate onions a lot more than before!

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