A female adult head louse clings to a hair plucked from a human scalp. The brown line visible inside the insect, on the left side of its body, is its last blood meal. Lice typically eat a few times a day. Josh Cassidy/KQED hide caption toggle caption Josh Cassidy/KQED Shots - Health News VIDEO: Head Lice Up Close, And All Too Personal KQED March 26, 2019 Claws of the louse that afflicts human scalps fit neatly around a single human hair. Louse eggs stick to hair shafts with a sort of glue. Maybe the best remedy for you and the kids? Comb, baby, comb.