Professional usage:Step 1: Clean Nails then trim nail surface as normal manicure process.Step 2: Apply a thin layer of Primer and cure under nail lamp.(NO NEED LAMP)Step 3: Apply a thin layer of Base Coat and cure under nail lamp.(Cure 30 seconds)Step 4: Use nail tips,and take out the poly gel on nail tips,to extention.(Cure 30-60 seconds)Step 5: Trim the shapes of nails.Step 6:Apply top coat and cure it under UV/LED lamp.(Cure 30-60 seconds)Step 7:Design your nail with your satisfied patterns.