This is the first time I have ever used builder gel. These were really cool to use! I could extend my own nail and thicken it!! It was hard to make an apex with this kind of builder gel. I also bought the jars of Modelone builder gel that you can form in to a ball and place close to the base of your nail and drag. It was easier to form an apex with that kind. This is more runny and flat. But it definitely thickened my nail! And helped fill in and hide any imperfections from the jar builder gel I used! I didn't do a perfect job, but it was my first time using it, and I was happy with the results! I also did a chrome finish with my nails, and that was not part of the Modelones set that I just received.