This dit da jow is for internal martial artists who are interested in strengthening the fingers for Dim Mak or finger dotting skills. It is also used for concentrating on striking small areas. Iron Goddess condenses the energy and seals all of the accupuncture points on the hand, except those on the fingertips. Tighter energy circulation helps focus the transfer of power. This liniment is designed for the last stages of finger training and should be used only by persons who already have undergone extensive hand preparation with hot liniments. This is provided in a 4oz bottle.