Ars sulf rub (Homoeopathic Potency) – Original Schwabe Germany

Recommended as per 

Homoeopathic Materia Medica (William BOERICKE)

Dose.–Third to thirtieth potency or higher. Locally, the tincture, but should never be applied hot or at all when abrasions or cuts are present. It can be used only on Homoeopathic Physician Advise.