Oiling hair is an important regimen that every woman should adhere to whether they have natural or chemically treated hair. A good oil massage increases blood circulation in the scalp leading to good hair growth and strong hair follicles. Oil is a replenishing agent and helps to condition hair at a deeper level. It penetrates deep into the scalp, enters the hair cuticle, nourishes the strands and stimulates blood flow. If the oil is kept overnight on the hair, then the scalp gets enough time to absorb the oil.