Hi firstly see a dermatologist. Take permethrin one percent lotion on prescription after due dermatological guidance and apply over the scalp for twenty min before bath. Repeat this over a week for four weeks, ... This will kill all the adult lice and young lice that are born. Only the lice eggs laid earlier will be left and can be removed by hands or wanted off over time. Send further queries on follow up chat. Hope this helps. Warm regards, Dr Govind Suresh Mittal.