Can check every day: May be big adult lice. The usual plan is to have somebody remove every nit (lice eggs) he can find after the first Nix (or other lice-killer) shampoo. Checking hair and head for lice or nits, every day, will prevent lice from gaining a foothold again. Repeating the Nix (permethrin) shampoo in 1 week helps. As long as any and all nits are quickly removed each day, the lice problem goes away.
Answered 7/15/2017
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