Your doctor will provide instructions on how to use Head Lice Soap and the recommended amount to use It is important to read the instructions that come with the medication to ensure proper usage Before applying the soap make sure your skin is clean dry and cool Thoroughly wash your entire body 814 hours after using the medicine In most cases a single application is sufficient to treat the condition However if a second application is necessary wait at least 7 days before applying again Itching may persist for a few weeks after treating scabies but this is likely due to an allergic reaction to dead mites and not a sign of treatment failure The most common side effects of Head Lice 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 if you are pregnant or breastfeeding it is recommended to seek your doctors advice before using this medicine Although generally considered safe consulting with your doctor is always a good idea in these situations