If I had to choose one eye makeup product that I could choose for the rest of my life (I don't know why i'd ever be in this predicament) I'd choose a black liquid eyeliner! I recently purchased the Tarte 's Precision Longwear Liquid Liner. It comes with a very fine felt tip and its so good for making very precise and thin liner on clients. Most importantly, the formula is very black and that baby does not budge!!! It is definitely long lasting and I recommend it to all you liquid liner lovers out there! It retails for $20 .