As a lice expert, I recommend using natural products infused with essential oils on the scalp to prevent and protect the hair from lice infestation. Using non-toxic products on the scalp results in soft, silky, and manageable hair. Many of the lice products sold in pharmacies are pesticides and have been on the market for as long as 30 years. If you feel you must use them, do so sparingly, and carefully follow all directions as it may cause side effects such as scalp irritati