Onion Hair Oil for Hair Regrowth & Hair Fall Control, 250ml at Rs.599. The hair oil is dermatologically tested and can be used on all skin types. Mamaearth Onion Oil, rich in Sulphur, Potassium & antioxidants, reduces hair fall & accelerates hair regrowth. You can earn an extra GoPaisa(GP) cashback on your every order while shopping via GoPaisa. You can check cashback rates to know about exact rate of Cashback amount. Shop now!