What it is: A mattifying top coat that transforms any polish instantly by mattifying and locking in color.What it does: Traditional shine is given modern edge with a flawless, flat finish that's unexpected yet elegant and supersmooth to the touch. One coat helps seal in polish to extend wear and protect color from fading and chipping. The Pro-Contour Brush allows for easy, effortless application that instantly mattifies and locks in color. It creates a soft (never streaky) suede-like finish with a resilient, protective layer to keep polish safe from daily wear and tear. How to use: Apply a thin, even layer over any polish.