Virgin Coconut Oil for Hair: Why It Is the Most Studied Oil There Is

Most hair oils are supported by tradition and very little else. Coconut oil is the exception, and the reason is a molecule.

The lauric acid argument

Hair is mostly keratin, a protein. Washing hair — particularly washing damaged hair — removes some of it, and that cumulative protein loss is a large part of what people experience as hair getting weaker over years.

Coconut oil is unusually high in lauric acid, which is a short, straight-chained fatty acid with a high affinity for protein. Being small and straight, it can move into the hair shaft rather than sitting on the surface the way most oils do. Once inside, it reduces how much protein the hair gives up when it is washed.

Work published in the Journal of Cosmetic Science compared coconut, sunflower and mineral oil on this measure. Coconut reduced protein loss on undamaged, damaged and chemically treated hair. The other two did not, on any of them.

That is a narrow finding and worth stating narrowly. It is not that coconut oil grows hair. It is that coconut oil is measurably better than the alternatives at stopping hair losing protein in the wash — which, over years, is not a small thing.

Pre-wash, not post-wash

The finding points to a specific habit. If the benefit is reducing what washing takes out, the oil needs to be in the hair before the wash.

This is what Indian households have done for centuries without the paper. Oil, leave it, then wash. The oil is not meant to stay in.

Virgin or refined

Virgin is pressed from fresh coconut without heat or solvents. It smells of coconut, and it keeps the minor compounds that come with the fat.

Refined is pressed from dried copra, then bleached and deodorised. It smells of nothing.

Both contain lauric acid, so for the protein-loss effect specifically, refined is not useless. Virgin is the better product and the gap is smaller than the price difference suggests. If the budget is tight, refined coconut oil used properly beats an expensive oil used wrongly.

Why it goes solid

Coconut oil sets below about 24°C. In a north Indian winter it will be solid in the bottle for months.

This is not spoilage and nothing has been lost. Stand the bottle in warm water for a few minutes. Do not microwave it and do not put it on a flame.

Conversely, an oil that stays liquid through a Jaipur January is not pure coconut oil.

How to use it

1. Warm it by standing the bottle in hot water.
2. Section the hair and apply along the partings, scalp first.
3. Massage ten minutes with the fingertips, not the nails.
4. Work the rest through the mid-lengths and ends, which is where protein loss does the most visible damage.
5. Leave one to two hours, or overnight for dry hair.
6. Shampoo on dry oiled hair first, then wet and lather. One wash instead of three.

Twice a week.

Who it does not suit

Some people find coconut oil makes their hair feel stiff or straw-like with repeated use — usually those with low-porosity or protein-sensitive hair. If that is you, it is a real effect and not in your head. Alternate it with argan or olive.

On the face, coconut oil is comedogenic for a fair number of people. It is excellent on the body and a gamble on the face.

As a carrier

Coconut is the default base for almost everything else. Four drops of an essential oil in 10ml of coconut, or ten to fifteen drops of an infused oil like bhringraj, and you have a treatment that spreads properly and washes out.

Our virgin coconut oil is cold pressed, 100ml. It is also the carrier in The Bhringraj Ritual.