DOSAGE AND ADMINISTRATION: Apply Sumaxin (sodium sulfacetamide 9% and sulfur 4%) Wash once or twice daily to affected areas, or as directed by your physician. Wet skin and liberally apply to areas to be cleansed. Massage gently into skin for 10-20 seconds,, working into a full lather, rinse thoroughly and pat dry. If drying occurs, it may be controlled by rinsing off Sumaxin (sodium sulfacetamide 9% and sulfur 4%) Wash sooner or using less often.