From time to time gels are called "shellac," but the two aren’t essentially interchangeable. Shellac is really a trademark of CND, the creators of gel technology. Visualize it somewhat like “jacuzzi” and “hot tub,” the former referring to your trademark manufacturer name and the latter to a sort of solution. https://bookmarkingfeed.com/story17990320/the-smart-trick-of-nail-gel-remover-that-nobody-is-discussing