Types of Cupping cups
The traditional method of cupping. A small cotton ball is held in locked forceps, and wet with alcohol. The cotton ball is ignited and inserted into the cup which will evacuate some air, creating a vacuum. The cotton ball is withdrawn and the cup is quickly placed on the skin in the chosen area.
Many modern cupping practitoners use magnetic or hand pumps to create the suction. This has can have several advantages for the practition, such as requiring less skill, and no need for flame or flammable liquids. It is also easier to judge the amount of suction being used. This is my personal favorite.