Hair Fairies Nit-Zapping Clenz Shampoo is a potent combination of non-toxic, natural ingredients. Our custom recipe of tea tree oil, lemongrass, rose hips, witch hazel and other ingredients works to damage the nervous system of head lice, making it difficult to reproduce. Use our Clenz Shampoo with our Nit-Zapping process to safely and quickly destroy lice and eggs. 8 oz.