just like using nail polish and a top coat. Suppose to be something great! hahahah $15. for nothing but cheap polish and a thick top coat. Not great. Don't wast your money. Chipped after 3 day. I've got 99 cent polish that works better. Sucks really that I wasted all that money!
I love the colors and the top coat makes it look really professionally done. It lasts about 10-12 days or me before it starts to ship. But I do heavy work like, cook, clean, etc.. the other regular nail polish starts to chip in just one day! so I am fairly happy with this.