This has been a staple in my make-up kit for as long as I can remember. I've tried other brands, but always come back to this for it's staying power & ease of use. The dark black/brown is perfect for accentuating eyes without the harshness of a true black. Wish I didn't have to use an eye primer to prevent smudging at the end of the day, but a small additional step to ensure clean lines.
Pro Tip: Use an angled liner brush to get the perfect cat eye ;)