Hair is also skin. So, massaging hair is as good as massaging other body parts. In the process not only hair but also scalp is massaged. It is god to massage the hair and scalp well after oiling.
If it is done with soothing oils then the benefits are maximum. Apart from this, warm oil massage work wonders for the hair and the scalp and it helps in strengthening our hairs too...!
some experts do suggests that it is always advisable to oil one's hair the previous night before shampooing it the next day. It helps in retaining the texture of hair...!