How much pain do you feel during the Shurink procedure?

I tend to be a bit of a coward, so I am very afraid of pain. I am looking into Shurink because I think it might help with skin elasticity, but it seems to be somewhat painful. I know they will administer anesthesia before the procedure, but I am curious how much pain I will actually feel. I wonder if I will feel pain throughout the entire treatment, or if it is bearable.