Lice Ladies DEFEND Shampoo has been tested on hundreds of customers heads at Lice Ladies Clinics across the country. This is an all natural finely tuned solution consisting of many ingredients one being well natural sourced high-quality peppermint essential oil. Peppermint oil sooths the scalp and aids in repelling lice. This shampoo is pesticide free. It is best to use after treatment and on a daily basis to maintain a lice free head of hair and is great when paired with Lice Ladies Defend Conditioner and Lice Ladies Prevent daily spray. Lice Ladies DEFEND Shampoo aids in Preventing Future Lice Infestations - Natural, Non-toxic, Pesticide Free, Pleasant Natural Scent, Hypoallergenic, safe and easy to use.