Thanks for the query. If you are externally applying hair oil, kindly discontinue that. Hair oil has no purpose related to the growth or quality of the hair and can be abandoned in light of present understanding. The only benefit is probably related to the massage during the process of hair oil application. You should shampoo your hair daily with a mild agent and should solve your problem of excess oily feel on the scalp. If it still persists, meet a Dermatologist. Hope it helps you.