Certain laser skin care treatments can be done in one appointment, but most require more than one visit to achieve your desired results. For example, with Viva skin resurfacing, you will need to make an additional 2-3 appointments spaced out 4-6 weeks apart to achieve optimal results. In order for the laser to be effective, you should follow your laser technician’s or Nurse Practitioner’s instructions for the length of time between your treatments.