Gelish has the performance of a gel but the application of a polish, it soaks off with acetone o an acetone based remover in around 10 minutes. Bio Sculpture is a buff off gel so the gel is buffed off the nail to remove it vs soaking it. They are both nice. I personally use Gelish as I prefer the application and thin look as it looks more like a nail polish and there is less buffing of the nail. But bio sculpture is nice too.