Your doctor will provide instructions on how to properly use Perbizo Soap and the recommended amount to use It is important to read the instructions provided with the medication to ensure its correct usage Before applying the soap make sure your skin is clean dry and cool Thoroughly wash your entire body with the soap approximately 814 hours after initial application In most cases one application of the soap is sufficient to treat the condition However if a second application is needed it should be done at least 7 days after the first one It is possible for itching to persist for a few weeks after treating scabies This is typically due to an allergic reaction to dead mites and does not indicate treatment failure The most common side effects of Perbizo Soap include mild burning stinging or tingling at the application site These side effects are usually mild and not experienced by everyone Before using the soap inform your doctor if you have any skin conditions or allergies to medications food or other substances If you have asthma or are pregnant or breastfeeding it is advisable to seek your doctors advice even though the soap is generally considered safe