Hair dyes were used extensively to blacken the greyhair. Varahamihira gives a method of preparing hair dyes from grains of harika (paspalum scrobiculatum) and loha churna. | Hair dyes were used extensively to blacken the greyhair. Varahamihira gives a method of preparing hair dyes from grains of harika (paspalum scrobiculatum) and loha churna. |