Hair oiling, honestly: what oil can and cannot do for hair

In the classical routine, oiling the scalp and hair (champi, the word that gave English 'shampoo') sits alongside abhyanga as regular maintenance. The traditional claim is straightforward: oil protects the hair shaft, reduces breakage, and conditions the scalp. Interestingly, that specific claim is one of the better-tested ideas in this entire journal.

The coconut oil study

In 2003, Rele and Mohile published a study in the Journal of Cosmetic Science measuring protein loss from hair treated with mineral oil, sunflower oil, and coconut oil. Coconut oil came out clearly ahead: applied before or after washing, it reduced protein loss from both undamaged and damaged hair. The authors attributed this to its lauric acid content — a smaller molecule with an affinity for hair proteins that penetrates the shaft, where larger molecules mostly coat the surface.

The finding is narrow — less protein loss, less breakage — but it is real, replicated in method, and it is about protection, not growth.

What oil does not do

No oil has been shown to grow new hair or reverse pattern hair loss — those claims belong to dermatology, not the kitchen. Oiling also does not suit every scalp: heavy use can worsen seborrheic conditions, and broken skin on the scalp should be left alone. If you are losing hair, a dermatologist is the right first stop.

A sensible oiling practice

• Oil the lengths and ends primarily; a light touch on the scalp is plenty.
• Apply before washing — oil as a pre-wash protectant has the best evidence behind it.
• Warm oil is traditional and feels good, but body temperature is the ceiling.
• Once or twice a week is a reasonable rhythm; daily is rarely necessary.

Our Reshmi Ends Hair Oil follows this logic — a light blend applied to the ends as a pre-wash treatment, drawing on the traditional ingredients of the practice rather than promising anything the evidence does not support.