I'm literally on my last nerve when it comes to headlice, my DD has caught them twice in less than a week!!
I treated her with Headrin, combed her hair to within an inch of it's life, washed her uniform, all bedding, coat, scarf, towel etc. Tied her hair up and plaited it for school and sprayed it with repellent spray, invested in tea tree shampoo and comb her hair with a nit comb in the morning and at bed time. Yet she still catches them!
Im at the point where I'm going to inspect the kids in the school line and yell at nitty parent :( as it's costing a fortune in lotion and so time consuming. Plus my DD has such thick hair she hates having to have the bit comb dragged through it twice a day.