Shyamadi hair-blackening oil

The flowers of shyama (the commentary: phul priyangu, with a question mark), saireyaka (katsaraiya), sahachara (yellow katsaraiya) and black madanaphala; plenty of leaves of mahanila and nila; shalaparni; mango kernel; arjuna bark; samudraphala (nichula); jujube; the bark of milky trees; and iron powder are taken in equal parts, dried and powdered. Mud from the place where lotuses grow, equal to all these powders, is added, and the mixture is rubbed with the fresh juices of nili and bhringaraja in equal parts and with triphala decoction, filled into an iron pot (closed) and kept ten nights. With this paste and a decoction of nili, bhringaraja and triphala, sesame oil is cooked until applying the oil turns white hair black (a footnote: test it on a white hair or a heron's feather and, if it does not blacken, add decoction and paste and cook again, repeatedly). The finished oil is kept a month in a strong iron pot, then applied to white hair and taken with care as nasya; all the hair is said to become black like a row of bees and nilanjana, with roots as firm as magnetic iron, and the skull too is coloured.