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 ...

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 ...

Apply sufficient amount of gel to dry hair; wait 10 minutes. Rinse thoroughly. Use provided comb to remove lice and eggs. Shampoo and condition hair. Repeat if lice still present after 7–9 days.