An interesting fact that people don’t know about the glu that holds nits (lice eggs) on the hair shaft is that the makeup of the excretion is identical to the makeup of hair. There is nothing on the market that can safely dissolve lice egg glue without damaging the hair as well and the only way to remove lice eggs from the hair is to pick them manually hence the term “nit picker”. Vinegar, salt, and all the other old wives tales are ineffective based on scientific research.