The melted wax will catch the root of the hair, and the wax will naturally separate from the skin when it hardens.
Also, the warm wax makes the pores of the hair follicles open wide and can be less painful when removing
When the hair is pulled out part of the hair follicle will close, so your hair will be less and less fine
Tear off the wax paper quickly in the opposite direction of hair growth.
Tear off the wax paper quickly at a 45° angle rather than vertically.