The Secret Lies in the Clay All China Glaze lacquers are exclusively formulated with super ingredient “kaolin” (China Glaze) as a nail hardener, the same material that gives porcelain its high shine.Professional 220-strand brush for easy applicationLong-wearing nail lacquer is an oil baseChina Glaze is a revolutionary nail color system for professional application. Using special methods, China Glaze offers incredible durability, fast drying, easy application and exclusive colors.