The wax has been overheated/overcooked.
Waxperts Wax is a premium wax range with premium ingredients. By melting your wax at a high temperature, you are effectively ‘cooking’ and overheating your wax and most likely burning it. The polymers and resins in Waxperts Hot Wax will separate when ‘over-cooked’ and when the wax eventually cools down, the wax cannot ‘fuse’ back together the way it should. This will leave the wax with a gritty, ‘oatmeal-like’ consistency making it more difficult to apply, as it no longer has that smooth consistency. But is still usable.