Lyclear Extra Strong Shampoo 200ml. Fast action: The Shampoo has been proven to be up to 100% effective against head lice in 5 minutes. Up to 72* hours protection: The Lice Protection Factor (LPF) technology makes hair an unpleasant environment for lice, helping avoid possible reinfestations. Gentle on hair & skin: Clinically proven against "Super Lice"**. Insecticide-free formula suffocates and dehydrates pesticide resistance lice. Easy rinse: The silicone-free shampoo is convenient to use as it washes the hair at the same time. Soft & shiny hair: A 200 ml bottle lasts up to 8 applications, depending on the length of the hair.