Spotting a tiny, white speck in your child's hair is enough to make many parents panic. Dandruff is a scalp condition in which dry skin comes away from the scalp in white flakes. After the nits hatch, they move from the hair shafts to your scalp to find sustenance. Nits, nymphs and lice is a bit harder to identify when your hair is black or brown because it can sometimes be mistaken as something else like dirt or dandruff. What do head lice look like in brown hair If you are a person with brown hair then this part is for you. Head lice feed on blood and therefore stay close to the scalp where there is an abundant supply of food. Dandruff can look similar to head lice eggs and also causes the scalp to itch. Head Lice: What Parents Should Know.