Clobetasol is a steroid. It blocks the production of certain chemical messengers (prostaglandins) that make the skin red,|swollen and itchy. Gentamicin is an antibiotic which kills bacteria that cause skin infections. Clotrimazole and Tolnaftate are antifungal medications which specifically stop the growth of fungi on skin. Clioquinol (Iodochlorhydroxyquin) is an antibiotic with additional antifungal action. It works by preventing the growth and multiplication of the both bacteria and fungi. This treats your skin infection effectively.