Mosaic Crystal Builder Gel is an absolutely transparent, self-leveling gel with a medium viscosity. Can be used as a base, builder or top gel (3-in-1). Polymerizes at a low temperature (doesn’t burn in the uv lamp). Beautiful vibrant gloss. Does not yellow. Easy to apply and easy to file. Can be pinched (15-20 sec in 36w UV lamp or 3-5 sec 36w LED-UV). Perfectly keeps its shape after pinching of deep c-curve. Cure time 2min in standard 36w UV lamp, or 1 minute 18w LED-UV.