During my quest for the perfect jet black, micron-sharp liquid eyeliner, I was introduced to KOSE Fasio Film Liquid Eyeliner. I don’t know why it’s called “film” but guess that the liquid liner becomes almost like a plasticized ink line on your lid and only comes off with strong waterproof makeup remover and vigorous scrubbing.
The line is very sharp but I have to still do 2-3 runs to get the jet black color because the tip is so thin. The smaller the tip, the harder it is to get a vivid super black line on your eyelid. I think it’s because it’s hard for the ink to fully flow to such a small tip. See below.