The Logical Choice for Gentle, Safe, & Natural Products for the Entire Family Cleans, Loosens, & Washes Away Debris from the Hair and Scalp Natural & Non-Toxic Formula. Natural. Non-Toxic. Eco-Friendly. Hypoallergenic LiceLogic® Clear & Free Shampoo is natural, gentle, and safe for daily use. LiceLogic Clear & Free Shampoo provides effective, gentle, cleansing and contains a naturally derived foaming agent that will not dry the hair or scalp. All LiceLogic products are eco-friendly, colorant free, and naturally scented. Not tested on animals Biodegradable.