I made a gel out of agar agar using the package directions. When it was still a liquid, I added 10mL of 1% Ivermectin injectable liquid for farm animals to 70mL of the gel. Then I let it cool in the fridge. Applied liberally to roots, and let dry. Hair looked shiny and beautiful. After a day or two, washed as usual. I did this on my whole family at once and we have now been lice-free for at least 4 months!
This remedy kills nits and lice and does not require combing. They say that the nits might hatch out in small quantities, but not be viable because of the chemical treatment they received while developing.
No odor, no irritation, no problems!
I had tried EVERYTHING else, and because I was trying to treat myself and multiple kids, I simply couldn't make the other solutions work.