My son was 4 years old and his daughter was already in school. They were infected with pediculosis. With the son, the problem was easily solved - they cut under zero, but with the daughter they were tormented. She had very thick hair under her shoulders. It was a pity to shave. I tried all the drugs, scratched - nothing helped. It was under the New Year. The daughter asked for a hairstyle "like the princess" - wave-shaped hair "hofre". In those years there were only stitches for straightening hair with iron plates, as well as plates for hoffers in the set. The hair was glorious. After a few days, we realized that we had got rid of the problem. We just burned all the insects and their eggs.