Air Cushion Micro Chrome Pens - 6 Colors. High Quality. Apply the base coat gel first before wiping the black soak off gel base ( recommendation). Secondly, wipe the Top Coat gel then handling your nails into the led lamp under 10s and take it out. For the 3rd time, apply the Air Micro Chrome Pen by brushing it on your nails until it's completed fulfilled the color. The final step is to wipe the Top Coat gel once again and give your hand into the Led lamp for 60 seconds.