However, of course, some basic rules must be observed: Only for external use, not to be in contact with open wounds or eyes. Otherwise very effective in inflammatory processes on the skin. A outgrowing and festering toenail was cured after 3 days, after I had previously been treated with antibiotics and other anti-inflammatory agents. But please pay attention: If after 3 - 4 days no improvement or maybe even after the application sets a deterioration: go to the doctor immediately!