It is one of the methods of oil application on the head. In this treatment a piece of cloth or cotton soaked in warm medicated oil is kept on the head for a specific period of time. The temperature of the oil should be kept uniform by warming and pouring of the oil again and again.
The warmth of the oil increases the blood circulation on the scalp and stimulates the peripheral nerves. This will help for the absorption of the medicaments through the scalp.