If the patches are few and large, chrysarobin rubber-plaster may be used.
Succedaneum for chrysarobin; very active reducer or "reactive."
It is less rapid than chrysarobin, but it rarely inflames the surrounding integument.
The British pharmacopoeia has an ointment containing one part of chrysarobin and 24 of benzoated lard.
Pyrogallol is valuable, and is employed in the same manner and strength as chrysarobin.
chrysarobin is a valuable remedy, but must be used with caution; it may be employed as an ointment, five to ten per cent.