• Schedule appointments twice weekly with at least 48 hours between sessions.
  • Moderate skin tenderness (similar to a mild sunburn) lasting 24-72 hours indicates a good therapeutic response to the XTRAC laser treatment.
  • On average, patients notice improvement between 6-10 sessions and clearance between 10-20 sessions.Plaques on hands, feet, and scalp usually take more treatments to resolve.
  • Clearance rates will vary as each individual will react differently to UVB light.
  • Average remission rates for XTRAC laser therapy range from 3-6 months.


  • Blistering is a normal side effect of XTRAC therapy and often leads to faster clearance.
  • Hyperpigmentation (tan spots) may develop and will fade over time once therapy is complete.


  • Skin should be clean and dry when you arrive for your appointment.
  • Do not apply any lotions, creams, or medications.
  • Review all areas of psoriasis with the clinician.
  • Review all side effects of prior treatments with the clinician.
  • Wear protective eyewear provided by the XTRAC clinician.


  • Schedule next appointment before leaving the office.
  • Treat your skin as you usually would and apply any medications, creams, lotions, etc. freely.
  • Do not stop your current medications unless instructed by your physician.
  • Keep treated areas free from excessive sun exposure between treatment sessions.
  • Pay attention to any skin tenderness on treated areas and take note of how long it lasts.
  • Inform your physician if you start a new medication or make changes to your current medications.