What it isA waterproof, smudge-proof, intense black, demi-matte, fluid eyeliner with an optimized, paintbrush tip for easy application and maximum control.What it does"Ever flow" technology provides continuous flow for skip-free lining. Designed with 560 tapered bristles, this balanced brush-to-tip ratio provides maximum control and versatility in lining. Smooth, easy, one-swipe application. Flexible film formers seal on skin to provide all-day wear.Use:Shake. Press. Line.For thicker lines, apply more pressure and glide using the full length of the brush.For thinner lines, apply less pressure and glide using the tip of the brush.Pro Tip: For an easy, graphic look, draw a line, starting at the tip of the wing, that glides inwards onto the crease. Danessa Myricks Beauty Linework Onyx