Laser light makes the skin sensitive to pigmentation. When your skin comes into contact with UV radiation (sun and tanning bed), the skin can produce extra pigment, which is expressed in pigmentation spots. Therefore, make sure that you protect your skin every time you go outside (also in winter and in cloudy weather) with at least a factor of 30. If you are outside for more than 2 hours or are (again) outside 2 hours after application, it is important that you protect the skin again by at least a factor of 30. 6 weeks before and after the laser treatments, it is not recommended to come into contact with UV radiation and to protect your skin at all times with at least SPF factor 30 during this period.