The Kat Von D Tattoo Liner in Trooper has been a cult favorite since it came out. It is the blackest black waterproof eye liner with a brush tip that makes it easier to do a fleek wing that stays put for the whole day.
From hunting for a drugstore alternative, my sister and I have come across a very similar dupe for it which is the Physicians Formula Eye Booster™2-in-1 Lash Boosting Eyeliner + Serum.
This eyeliner claims to boost lash volume, length and thickness, but I don’t see any effect for that matter. I don’t really care because finding a good dupe is always a good thing.
Both eyeliners have an identical skinny brush tip. I personally prefer brush tipped liners instead of felt tip because it’s easier to do a sharp flick with it.