Eggs can only be removed by hand with a detection comb. They do not need a repeat treatment. Do not continue using any more insecticide lotion. Detection combing should continue to be carried out at least weekly and should be included in a regular routine for all the family. To date there is no evidence that the use of vinegar, Tea Tree oil, baby lotion or essential oils, etc. have any useful effect in the treatment of head lice.
Essential oils exist in plants to stop plants being eaten by insects.
They are therefore insecticidal. These products may possibly be harmful . With no evidence on their safety, the NHS Trust cannot therefore recommend them. Rinse the hair thoroughly. Using an ordinary comb, straighten and untangle again.