Shampoo kills lice by dissolving their cuticle and causing dehydration.
Hedrin Shampoo All In 1 it physically reduces the force needed to remove the nits during brushing and is twice as effective as combing just your hair with the anti-lice comb.
Directions for use:
Apply shampoo to dry hair from roots to ends and leave for 5 minutes. Wet hair to lather. Rinse. Comb your hair.