I can't believe it. They have only been back at primary school a fortnight and the infestations are back. I've tried every treatment from Boots over the years and combed and combed and combed, but they are always back after a couple of weeks after treatment. My twins are boys with reasonably short hair. Any one any thoughts? A friend of mine said she uses hair straighteners on her daughter's hair. my boys not so keen on that idea..