To treat lice, Cetaphil skin cleanser is applied liberally to the hair and scalp. Use a blow dryer after application. (It will form a hard shell on the hair.) Leave the hardened Cetaphil on the hair overnight and shampoo it out the next morning. All the lice should be dead (Pediatrics, September 2004). The procedure can be repeated a week later, if needed.
In addition to avoiding toxic chemicals, this “shrink-wrap” method that suffocates the lice eliminates the need to comb out the nits by hand, a tedious procedure for both parents and children.