Wrangling head lice, and the children they infest, must be up there with the most challenging duties a parent or caregiver has to face. And the job is getting harder. Commonly used chemical products ...

Almost 20% of children in some schools were infested. This outbreak can be attributed to the resistance of head lice to permethrin, which has not been mentioned in literature yet. The resistance ...

Head lice affect more than 100 million people worldwide annually. Permethrin (1% formulation) is efficacious but resistance is emerging. Malathion (0.5% formulation) is an alternative, but ...

Head lice begin life as very small (about 0.5-millimeter ... counter products that contain pyrethrins or pyrethroids (like permethrin), the active ingredients in Nix and Rid.