What to expect during a PDT treatment for acne?

Prior to treatment, the skin will be cleansed and treated with microdermabrasion or a scrub. The photosensitizing agent is then applied to the skin. Some people may experience a stinging sensation during this portion of the treatment, which should gradually subside.

Next, a medical light source is shone on the skin for 8-20 minutes. The light activates the photosensitizing agent. At this stage of the procedure, some people may experience a stinging or burning sensation, the intensity of which varies.

After treatment, the skin is extremely sensitive. People must stay indoors, out of sunlight, for 48 hours following treatment. This is because the photosensitizing agent makes skin sensitive to sunlight, so there is a risk of severe burns from sun exposure.