Lyclear Extra Strong Lyclear Extra Strong Treat Protect Lotion's formula not only suffocates but also dehydrates head lice and eggs. in addition, its easy to rinse and comb because it does not contain silicone. LPF technology helps avoid reinfestation for up to 72 hours*. Due to its mechanical action head lice are less likely to develop resistance to Lyclear Extra Strong Treat Protect Lotion. *LPF protection and Pediculicidal activity was demonstrated by ex vivo data. Lyclear shampoo kills up to 100% of head lice and eggs. Use sufficient product and comb thoroughly to remove all eggs. 1st Floor, 32 Vauxhall Bridge Road, Pimlico London, SW1V 2SS, United Kingdom