My (19 year old) daughter was itching her head & I said, "let me check your head!" but, she refused & said, "Mom, I got dandruff is all". She has history of dandruff & she had lice many times, but many years ago as a child, so I thought nothing of it & assumed it was the dandruff. Then 3-4 weeks later she dyed her hair with (Revlon hair dye) & she was itching again & this time she let me check, & all I pulled out was dead eggs & not one sign of the adult lice. So, now I know she had lice the first time I seen her itch, bc the dead lice eggs were way up by the scalp, but thank the Lord it was the dandruff today that made her itch. So, to my surprise dying your hair can get rid of lice! No joke! Now we have to get the dead eggs out, but don't have to worry about doing this every night for hours, bc if she had live ones they usually lay 4 eggs a day & most people have between 10-15 adult bugs or even more so that's = a lot of work for me & her!