China Glaze Nail Lacquer with Hardeners is a professional – level nail enamel made with a special balance of polymers and resins that combine to create a nail lacquer that is long lasting, chip – resistant and resistant to color and shine fading. Will not thicken in the bottle, no thinners necessary. The New Brush is a Stroke of Genius. 36% more fibers. Amplified holding power with maximum precision and control. More coverage in fewer brush strokes.