Mustard Oil for Hair Growth: What Actually Works

By the Edge Naturale Editorial Team · Medically reviewed by Shelia Davis, Edge Naturale Medical Team · Last updated June 2026

Quick answer: Mustard oil can support a healthier scalp environment by improving circulation and moisturizing the skin, which may help create conditions where hair grows more easily. It works best when massaged in consistently, used warm, and paired with ingredients that address your specific concern, whether that's dryness, breakage, or thinning edges.

Does mustard oil actually help hair grow?

Let's be straight with you. Mustard oil is not a magic cure, and no oil is. What it does have going for it is real. It's high in omega-3 fatty acids, erucic acid, and antioxidants. It also contains selenium and zinc, two minerals the scalp needs to function well. Some research on scalp massage (a key part of how you use this oil) shows that consistent massage can increase dermal papilla cell activity, which is tied to the growth phase of the hair cycle.

In short: the oil itself creates a better environment. The massage gets the blood moving. Together, they give dormant or sluggish follicles a better shot. That's a reasonable, honest expectation.

Step 1: Pick the right mustard oil

Not all mustard oil is the same. Cold-pressed, unrefined mustard oil keeps more of its natural compounds intact. Refined versions are lighter but may have lost some of the nutrients in processing. For scalp use, look for:

• 100% pure mustard oil (Brassica juncea)
• Cold-pressed or expeller-pressed on the label
• No mineral oil or fragrance added as fillers

One honest note: mustard oil has a strong, pungent smell. That's normal. If you can't handle it straight, blending it with a lighter carrier oil like coconut or jojoba is completely fine and still effective.

Step 2: Warm it up (this part matters more than people realize)

Cold oil sits on the scalp. Warm oil absorbs better and feels significantly more comfortable during massage. You don't need to heat it much, just warm it gently.

1. Pour a tablespoon or two into a small heat-safe bowl or glass dropper bottle.
2. Set it in a bowl of hot water for two to three minutes.
3. Test it on your wrist before touching your scalp. It should feel warm, not hot.

Never microwave the oil directly. You can't control the temperature and you risk burning your scalp.

Step 3: Section and apply to the scalp, not the hair

This is where most people get it wrong. They slather oil all over their strands and wonder why they're greasy with no results. Hair growth happens at the follicle, which is in your scalp. That's where the oil needs to go.

1. Part your hair in sections so you can see your scalp clearly.
2. Using a dropper, your fingertips, or a small brush, apply the warmed oil directly to the scalp along each part.
3. Pay extra attention to your edges, temples, and nape if those areas are thinning.

A little goes a long way. For most people, one to two tablespoons covers the entire scalp without overloading it.

Step 4: Massage for at least five minutes

The massage is not optional. A small 2016 study published in ePlasty found that standardized scalp massage increased hair thickness in participants over 24 weeks. The theory is that the mechanical stimulation stretches dermal papilla cells, which may encourage them to produce thicker strands and stay in the growth phase longer.

Here's how to do it right:

• Use the pads of your fingers, not your nails.
• Apply firm, circular pressure. Move in small circles across your scalp.
• Don't drag the skin. Work in one spot for a few seconds, then move.
• Give your edges and temples extra time since those follicles are often the most stressed.

Five minutes minimum. Ten is better. Put on a podcast and stop rushing it.

Step 5: Know how long to leave it in

You have two solid options depending on your schedule.

Cover your scalp with a plastic cap or old t-shirt wrap to trap heat and help absorption. Then wash out thoroughly with a sulfate-free shampoo. You may need two rounds of shampoo to fully remove mustard oil since it's heavier than most carrier oils.

Step 6: Be consistent. This is the whole game.

One application does nothing. Seriously, nothing. Consistency over weeks and months is what creates change. Most people who see results report noticeable improvement after eight to twelve weeks of two to three applications per week. Mark it on your calendar and treat it like a routine, not a random experiment.

If your edges are your main concern, this is also where a targeted product can give your massage routine more support. The Follicle Enhancer from Edge Naturale is a cream made with peppermint, argan, jojoba, and coconut that's designed to go right to the hairline and work during your massage. Peppermint oil has shown in a 2014 study published in Toxicological Research to increase follicle depth and dermal papilla size in mice, suggesting it may support the same kind of stimulation you're aiming for with your oil massage. You can use both or you can stick with mustard oil alone. Either way, the routine is what counts.

Are there any risks with mustard oil on the scalp?

A few things worth knowing. Erucic acid, which is high in mustard oil, has raised questions in some animal studies about cardiovascular effects when consumed in large quantities. That's eating it, not applying it topically. Topically, the main risks are:

• Skin irritation or allergic reaction in some people, especially those with sensitive skin or nut and seed allergies
• Comedogenic buildup if used too often without proper cleansing
• Possible irritation if the oil gets into the eyes

Do a patch test on your inner wrist 24 hours before your first scalp application. If you get redness, itching, or swelling, skip it.

FAQ

This article is for education and is not medical advice. If you are worried about hair loss, see a board-certified dermatologist. These statements have not been evaluated by the FDA. Edge Naturale products are not intended to diagnose, treat, cure, or prevent any disease.