Hedrin once spray gel is a liquid gel for the eradication of head lice and eggs. It works by physically smothering the lice. It contains penetrol which helps the product to penetrate louse eggs in order to kill them. The gel can safely be used as often as required without the lice developing resistance.directions1. Cover the shoulders with a towel.2. Shake the bottle well before each use.3. Holding the spray approximately 10cm from the hair carefully spray sufficient amounts of gel evenly over dry hair.4. Massage and work the solution into the hair with your fingers or a comb, spreading the gel thoroughly and evenly from roots to tips. Ensure that the scalp and hair are fully covered and the hair is saturated.5. Leave on the hair for at least 15 minutes, or longer if convenient.6. Apply shampoo directly to the entire surface of the hair, without wetting it, massage it in thoroughly and then rinse with water. Repeat process until all the solution is out and then apply conditioner, rinse and dry.please note hedrin once spray gel contains antifoaming ingredients so the shampoo will not lather readily. If necessary repeat the whole procedure remembering to apply shampoo directly to dry hair.always read the label and follow the instructions given.not suitable for children under 6 months.for external use only.ampnbspampnbsp