The number of treatments depends on the type of treatment you choose. With Lyclear Spray one 15 minutes treatment (incl. thorough combing) will be sufficient in most cases to effectively get rid of head lice. We advise you to re-check your treated child for head lice after seven days and repeat the treatment if necessary (should you notice any living head lice). With Lyclear Shampoo, two 10 minutes treatments are recommended. Comb the hair thoroughly to be certain all eggs are removed from the hair. Treating with LyclearSensitive requires one (overnight) application only. No matter what Lyclear treatment you choose, always use sufficient product. This is vital for a successful treatment.