Hold the spray at least 10cm from the hair and spray a sufficient solution evenly onto dry hair. Massage well from the roots to the tips and pay particular attention to behind the ears and the napes of the neck.
Leave on for 15 minutes.
Apply a small amount of normal shampoo to the hair before wetting it, shampoo thoroughly then rinse with warm water. Wash the hair again.
Before drying the hair use the comb to remove the eggs and lice.
Check the hair 7 days later.