The XTRAC Excimer Laser treatment can be used to treat psoriasis and vitiligo. This method targets the affected areas and does not damage the surrounding skin. The XTRAC Excimer Laser treatment can be used just about anywhere on the body, including the scalp, knees and elbows. This treatment is very convenient because it does not require that one use any messy creams. The XTRAC Excimer Laser Treatment is also very safe and patients will notice a major difference after just a few sessions.