Yes I agree I had to rub and rub and rub til my eyes hurt to take of the liquid last liner... I just kept using more and more makeup remover on a q-tip and went back and forth and it finally came off.
Shu Uemura cleansing oil - it usually does the trick fairly easily, but it did struggle to remove this, but it does a good job, just takes a bit longer than usual.
I find that if I use Fluidline as a base under it (which I use FL as a base anyway) that it comes off a lot more easily than if it is applied to bare skin.
Sometimes I like to wear just liner in the summer, though. I might still use FL liner first anyway.