I had a child with lice a couple of years ago, (it was an epidemic at her grade school.)
One mother suggested mayonaise -- it did not work, but my daughter's hair never felt softer! Later, my child's pediatrician told me one should never put mayo on anyone's head because if they have ANY kind of scratch or abrasion on their scalp (especially from scratching a itchy head), you are just inviting infection.
Another mother suggested to saturate her head in olive oil, which was suppose to smother the lice/nits. Just made her hair greasy for several days. And, boy, did it stink!
Also tried the store-bought remedies like Nix. Did not work. At all. In fact, I think they made the lice worse.
Another mother slathered vasoline on her child's head. It took her a month to finally wash it out. AND SHE STILL HAD LICE.
The ONLY THING THAT WORKED was purchasing for $15.00 a metal lice comb made by the National Pediculosis Association. Sat the kid in front of me and combed every hair on her head to remove each individual nit and bug on her head. Took several hours to do. I mean, my kid has the thickest head of hair!
The sad thing was the kids whose parents could not afford $15 for a comb (or just never treated their kids properly or AT ALL) kept reinfecting everyone so I had to go over my child's head with that comb every few days for the ENTIRE SCHOOL YEAR!
There is a website that is excellent regarding headlice that explains why it is so important to get rid of EVERY nit. An adult bug cannot survive without human blood after 24 hours. So that why it seems that some of the remedies work at first, but the nits can survive for weeks, so if you miss ANY nits, they will hatch and one will be reinfested. Yuck.
For more info, go to www.headlice.org
This subject is making me itchy. . . . .!