China Glaze Strong Adhesion Base Coat can be found at Sally Beauty Supply stores and Ulta stores for about $6. It's a clear coat applied before your nail color in order to extend it's wear without chipping. The brush it comes with is your standard, thin nail brush. This base coat applies smoothly and evenly and dries within 2-3 minutes. It helps your nail color to apply more smoothly and I find it does extend the life of my nail polish for about 3 days longer than normal with less chipping than without. I enjoy this base coat and I would recommend giving it a try if you're intrested.