There are many possible side effects. Because you are dealing with a high powered laser, their is a lot of heat being produced. Burns are common, as well as irritated skin.
As for the permanence of hair removal, each case is different. Depending on the quality of hair (thicker, darker hair is more easily removed) depends on the permanency for the removal. It is important to talk to your doctor so you can know what to expect before you go under the laser.
If you would like more information on laser hair removal visit http://www.dermagenix.com today!