One of the most important things that people need to know before they use DMSO is two-fold:
To always be very careful about using a natural/pure soap and make certain that you keep your hands and skin very clean before applying. Both the hands and the area of application must be very clean. DMSO can bring into the skin anything that it comes into contact with.
To always pick a highly pure DMSO. You always want 99.9% purity and higher. Dilute your DMSO solution at the time of application. We recommend starting with a 70/30 Castor Oil to DMSO ratio.