How many layers of Brush on Gel do I need to apply? Take into consideration that every client is different and the amount of layers used per client depends on the client's nail strength and desired nail application and finish they have become accustomed to. The natural nail/extention should not be able to bend once the BOG has been applied and cured. The best way is to physically push down on the nail to see if it bends or not. | Lola Lee Beauty Products | Facebook