Treatment sa lisa/kuto!

I have a niece na laging may kuto nung bata sya. My sister tried everything on her. Anti lice shampoos, vinegar, oil, suyod. Nothing worked. So she consulted a dermatologist. Sabi nung derma there are really types of hair na gusti ng mga kuto. Eh ang silky smooth and shiny ng hair nya ayaw iwan ng mga kuto. One time may nagsabi sa sister ko Sunsilk Orange ang gamitin. I don't know anong meron dun but the kuto doesn't like it. Ngayon whenever she has kuto Sunsilk Orange lang nawawala agad.