Not usually: Derbac is malathion; an organophosphorous insecticide used in resistant cases of head lice (over age six years) not usually used in scabies where resistance is rare. Malathion is flammable and made with a base of rubbing alcohol so use on raw skin (as in scabies) would cause stinging and irritation. Scabies is treated with prescription Elimite (permethrin) Permethrin 5% or--less effective oral ivermectin.
Answered 7/5/2018
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