I am African so combing for lice with a steel comb wasn't an option. I couldn't find anyone who was familiar with lice so I thought about what my ancestors did. We always greased the scalp after washing hair. So I pulled out Vaseline and put it from scalp to tip then covered it with a plastic bag and added a scarf for fashion. It drips a little and sometimes you see dead ones. But this process will smother them and kill them off in seconds. I had zero itching.
Also I washed it out in 3 days and reapplied and wrapped again for any eggs that will be hatching. They say they hatch within 7 days so I kept it on 4 more days. Washed hair as usual and no more lice.
For good measure I spray hair first with ACV and covered with scarf. I saw about 80% dead but some big ones were crawling around on plastic when I removed from head. I think the ACV made them run from my scalp?? One of my sons got lice from school and it only spread to me and my other son. My girls and husband were fine. I didn't treat any linen or go crazy around the house. I simply put Vaseline in everyone's hair so they have no source. We were all clear in a week.
Vaseline is cheap and simple if you can stay inside. If not put on a decorative scarf and hat/wig over it.
When my daughter was little she got hold of the Vaseline and smeared it in her hair. Like coconut oil it is very hard to wash out. Impossible in fact. Then I remembered when she was a baby I would put both Vaseline and baby powder on her tush. I thought, what's the point? The powder soaks up the Vaseline. Bingo! I sprinkled baby powder in her hair, let it set for a few minutes to soak up the Vaseline and washed out the powder. Talc works better than corn starch, but both work within one to two shampoos.