Because of its high comedogenic rating of 4, coconut oil is not the best choice for your scalp. It will block the pores and hair follicles and is also difficult to wash off, which can result in residue buildup. This buildup can further contribute to irritation and ultimately hair loss. We generally recommend not leaving anything on your scalp overnight. If you want to do an oil massage on your scalp then a safer option is squalane as it is antimicrobial. Even still, be sure to wash it off the same day you apply!