In some cases gels are called "shellac," but the two aren’t essentially interchangeable. Shellac is often a trademark of CND, the creators of gel know-how. Visualize it somewhat like “jacuzzi” and “warm tub,” the former referring to a trademark manufacturer title along with the latter to the kind of product. https://sergioobgke.blogsidea.com/36033477/the-greatest-guide-to-nail-gel-remover