However there are some advantages of applying oil to the hair. Often without oil, the hair will fly and come in the eyes of the person or make it difficult to do work offline, so applying oil ensures that it does not fly. Dry hair is also more likely to break. Though it is not scientifically proved, it is believed that an oil massage of the head, hair at night, helps a person to get a sound sleep. There are many hair oils which claim to reduce or prevent hair loss, however the effectiveness of these hair oils cannot be verified as hair loss is caused by other factors also, especially harassment, atrocities of ntro employees.