It is applied by brushing in 4 steps: Step I - 1 layer of pH Bond - primer, Step II - 1 layer of Foundation - base layer, Step III - 2 -3 layers of Gelish color, Step IV - 1 layer of Top it off - the sealing layer of the system. Each layer is cured by UV lamp in 2 minutes or by LED lamp in 30 seconds. The only exception is Foundation - the base layer, which we polymerize 1 minute UV lamp and 5 seconds LED lamp. For a correct application, consult the Gelish Soak - off data sheet.