I'm now on my 2nd set of these eyeliners, they're just so good. Created by makeup artist Jillian Dempsey, who, in her own words "...couldn't find an eyeliner that would create a lived-in, smudgy look and stay in place—so I made one."
I'm not a fan of pencil liners in general, they're often too dry with minimal color payoff. Not these shea butter, marula and jojoba oil-infused pencils, however. You can see how soft the pigment is, they glide on with no skipping, depositing a generous swoosh of opaque pigment. She uses these pencils on her many famous clients, and they frequently make a cameo on her Instagram page.
If you're not sure which color to get, get both. Everyone needs both an excellent brown and black eyeliner.