Pony Paints Liquid Grooming Chalk enhances markings for a crisp ready to show effect. Pony Paints colored chalks can also add a splash of colored fun to your horse. Apply to a clean, dry area of your horse with a sponge or your fingers. Apply a thin even coat several times, if needed. Use a damp sponge to sharpen lines or remove mistakes. Let dry completely. To remove, simply brush out or rinse with water.