It's a long-wearing gel liner that applies with a brush for foolproof application.

• Choose MAC Pro Longwear Fluidline Gel Eyeliner - Blacktrack

Benefits:

• It has an Ultra-smooth, Fluidline's gel formula that provides the precision of a liquid liner with a silkier, softer finish. 
• It goes on foolproof with a brush in an easy dip-and-stroke action. 
• Its long-wearing stay up to 16 hours and Smudge-resistant. 
• It has Lines up in a rich array of colors and finishes. Note: Brush sold separately.
• It's Waterproof and Non-acnegenic
• Its Ophthalmologist and Dermatologist tested

How to use:

• Line the lash line with Fluidline using a brush such as the 209 Eye Liner Brush or 208 Angled Brow Brush.