**Package Content** 4 Colors Builder Gel - 15ml each bottle Easy Application 1.File your nails on the surface to get rid of any excess oils. 2. Apply base coat - cure with nail lamp. (cure about 30 secs) 3. Put the extension form on your nail. 4. Apply 1st thin coat of builder gel, make it in the natural shape - cure. (cure about 60 secs ~ 2 ..