After the petroleum jelly is on the lips, cheeks, tongue, and mouth, and the gel is on the teeth, it is time to use the laser. The laser is blue and not very strong, so it must be placed very close to to the teeth. Typically, it will sit about an inch or two away from your teeth. Patients will undergo an hour of treatment; this can be broken up into two thirty-minute treatments, three twenty-minute treatments, or one sixty-minute treatment. When the procedures are broken up, it is okay to wait a day or two before the next procedure. This will help prevent tooth and gum sensitivity.