Canesten Solution is an antifungal medicine. It is used to treat fungal skin infections such ringworm, athlete's foot, diaper rash, sweat rash, and vaginal thrush. It destroys fungus by breaking their cell membranes and treats illnesses like ringworm, athlete's foot, fungal nappy rash, and fungal sweat rash. Even if your symptoms have subsided, you should continue to use it for the duration of the prescription. This will prevent the infection from returning.