Neem Oil for Dandruff: Why More Oil Is Not the Answer

The standard Indian response to dandruff is to oil more. It is also, quite often, why the dandruff does not go away.

Dandruff is not dryness

The flaking most people call dandruff is usually seborrhoeic dermatitis — an inflammatory response to Malassezia, a yeast that lives on everybody's scalp and feeds on the oils the scalp produces.

Read that again, because the implication is the important part. The yeast feeds on scalp oil. A scalp that is already producing too much, drowned in more oil twice a week and left overnight, is being fed.

This is why the people with the oiliest scalps often have the worst flaking, and why the obvious remedy makes it worse.

Genuinely dry flaking exists too — small, dry, no redness, usually in winter and usually across the whole scalp. That one does respond to oil. If your scalp is itchy, red at the roots, greasy by the second day, and the flakes are larger and slightly yellow, you are not dry.

Where neem comes in

Neem is used for this traditionally and it is one of the few cases where the traditional use and the mechanism line up reasonably well. It is antifungal, it is anti-inflammatory, and it has been put on Indian scalps for exactly this for centuries.

The difference from ordinary oiling is dose and duration. You are not oiling the hair. You are treating the scalp, with a small amount, for less time.

The method

1. Fifteen drops of neem oil with three drops of tea tree in a small bowl. Tea tree is the concentrate that sharpens it.
2. Warm it a little. Stand the bowl in hot water.
3. Scalp only. Not the lengths. Neem on the lengths is just hard to wash out.
4. Massage three minutes, then comb through with a wide-tooth wooden comb to loosen the flakes.
5. Leave forty-five minutes. Not overnight — this is the part people get wrong.
6. Shampoo on dry oiled hair first, then wet and lather.
7. Twice a week until it settles, then once a week to hold it there.

The rules that matter

Never scratch. Scratching a flaking scalp breaks the skin and spreads it. Use a comb. This is the single most useful thing in this article.

Never use tea tree oil neat. Three to five drops in 10ml of carrier is the dose. Neat tea tree on an already-irritated scalp causes exactly what you were treating.

Do not leave it overnight. Longer is not better here, and for an oily scalp longer is worse.

Do not stop the week it clears. Dropping to once a week is what keeps it away. Stopping entirely is why it comes back every winter.

The smell

Cold pressed neem oil smells strongly of neem — bitter, garlicky, unmistakable. It is not pleasant and it is not supposed to be. A neem oil that smells of nothing has been deodorised or heavily diluted, and you have paid for the carrier.

It washes out. Nobody will smell it on you the next day.

When to stop and see a doctor

If the scalp is bleeding, weeping, or the flaking has spread to your eyebrows, face or chest, that is beyond what an oil treats. Seborrhoeic dermatitis can be managed medically and there is no reason to spend six months on home remedies first.

Cold pressed neem oil and undiluted tea tree oil are sold separately, or together with the comb in The Scalp Purifying Ritual.