80% of all head lice are PESTICIDE RESISTANT and we tried the pesticides and oils and vinegar for MONTHS to no avail so I feel your pain as do my kids and wife who got embarrassed when they went to get their hair cut and got kicked out of the salon!
So I HAD to find the solution as this was a neverending hell!
I won't beat around the bush, but I'm a biochemist and I have my own business making organic body lotions and massage oils and a PRIVATE website with restricted access and my kids and wife had head lice for 2 mos until I found, and looked up 'ulesfia'. Being a chemist, it's not hard to make 5% benzyl alcohol (BA) solution like in their formula or make it 4% or 6% of substitute a like chemical for 1/10 the cost. (I accidently made a 10% solution when I didn't remember it was only 5% for ulesfia and that worked, too!)
NONE of the chemicals including the BA, or any other part of it are restricted and in fact, ANYBODY can buy 1 gallon BA for $50 and you don't need a script or I can sell you my version by the liter which cured the problem IMMEDIATELY after we'd been living this hell for mos with EVERY other 'remedy' and you only have to apply it and leave it on for TEN MINUTES!
If you want to know how safe BA is, it is also used in pharmaceuticals for INJECTION as well as IV's and eye washes and drops which I also make for my allergies.
This 'big secret' about how to really kill head lice has to end as well as the suffering I and others had to go through to solve it!
You can contact me at
chemicalanarchy@hotmail.com if interested!