See the video for how many variations of PDT there are. If you did not get a good reaction there maybe a few reasons. 1. You actinic keratosis are pigment - Fraxel 1927 high density will help. 2. The cream did not get absorbed enough. Levulan can be applied to gently abraded skin - see video.3. ...
Photodynamic therapy is FDA approved for treatment of precancers or actinic keratoses. They often occur on the scalp in men with hair loss or thinning hair. PDT is very effective treatment for this.
Photodynamic therapy, or PDT, is a procedure in which
levulan or metvix, a photosensitizer, is applied to the skin and incubates for
a period of time (usually 1 to 3 hours). The photosensitizer is then
activated by a light source, such as blue light, red light or intense pulsed
light...