There are different methods of cupping, including:
During both types of cupping, your therapist will put a flammable substance such as alcohol, herbs, or paper in a cup and set it on fire. As the fire goes out, he puts the cup upside down on your skin.
As the air inside the cup cools, it creates a vacuum. This causes your skin to rise and redden as your blood vessels expand. The cup is generally left in place for up to 10 minutes.
A more modern version of cupping uses a rubber pump instead of fire to create the vacuum inside the cup. Sometimes therapists use silicone cups, which they can move from place to place on your skin for a massage-like effect.
Wet cupping creates a mild suction by leaving a cup in place for about 5 minutes. The therapist then removes the cup and uses a small scalpel to make light, tiny cuts on your skin. Next, he or she does a second suction to draw out a small quantity of blood.