Nix shampoo treats head lice by affecting their nervous system and killing them.
One 59 ml bottle of shampoo is enough to treat shoulder-length hair for adults, elderly, and children over 6 months. For children under 6 months, use only as directed by a doctor.
First, wash hair with regular shampoo (no conditioner or low-pH medicated shampoo), rinse, and towel dry until damp, not wet. Shake Nix shampoo well, apply evenly to hair and scalp, especially behind the ears and on the neck. Leave it on for 10 minutes. Rinse thoroughly with water and towel dry. Use the provided fine-toothed comb to remove dead lice.
One treatment is usually enough. If live lice are still found after 7–10 days, the treatment can be repeated once.