<unk>  has a slower onset of action in controlling psoriasis, typically several weeks, compared to glucocorticoid steroids, but is without the potential for rebound reaction on withdrawal. It cannot be used on the face or genitalia. There is some tentative evidence that anthralin might be useful for alopecia areata.
Dithranol
Ioversol
Dextran
Dauricine
Dimercaptosuccinic acid
Acephate
Dimercaprol
Mesocarb