The best wax hair removal kit should be safe and convenient. A good kit will heat up the wax before application to make the process as painless as possible. There is no need to warm the wax beforehand, but it should be warmed up between your hands before use. Pre-waxed strips will provide a clean, fast and comfortable way to remove unwanted hair from a variety of areas. Some strips may leave a wax residue after application, so be sure to follow the directions carefully.