The Puressentiel head lice treatment lotion kills head lice, larvae and nits in complete safety with proven efficacy in 10 minutes. its 100% natural formula, free from synthetic chemical agents, combines 6 plant oils (Coconut, calophyllum, Jojoba, sunflower, sweet almond, castor which act mechanically by obstructing the respiratory openings of the head lice, larvae and nits. The head lice are unable to develop resistance due to the asphyxiation mechanism) with 4 essential oils (Lavender, clove, tea tree, geranium which are soothing and antiseptic, ideal for relieving scalp itching). Its formula is gentle on hair and the environment and leaves hair silky and shiny. Its applicator bottle is easy and practical to use. It has a fresh and pleasant fragrance.