Chrysarobin n. (Chem.) A bitter, yellow substance forming the essential constituent of Goa powder, and yielding chrysophanic acid proper; hence formerly called also chrysphanic acid.
... various tints occur. Blue hair is seen in workers in cobalt mines and indigo works; green hair in copper smelters; deep red-brown hair in handlers of crude anilin; and the hair is dyed a purplish-brown whenever chrysarobin applications used on a scalp come in contact with an alkali, as when washed with soap. Among such cases in older literature Blanchard and Marcellus Donatus speak of green hair; Rosse saw two instances of the same, for one of which he could find no cause; the other patient worked ... — Anomalies and Curiosities of Medicine • George M. Gould
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