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a mixture composed chiefly of potassium polysulfides and potassium thiosulfate; used externally in scabies, acne, and psoriasis; used in the manufacture of "white lotion classic" (a mixture of sulfurated potash and zinc sulfate used as a dermatologic medication).
Synonym(s): liver of sulfur
A liver-colored or green-yellow substance made up of potassium thiosulfate and potassium polysulfides and containing 12.8% sulfur as a sulfide; a principal ingredient of white lotion.
See also: potash