Photodynamic Therapy

ALA is a natural compound made in the body. When ALA is applied to the surface of the skin, it is converted in the skin to a substance that is very sensitive to blue light. For ALA-photodynamic therapy, ALA is first painted on the skin and about one hour later, blue light is shone on the skin in the area where the ALA was applied. The combination of this topical medicine and light exposure is very effective in destroying unwanted skin growths, most commonly actinic keratosis or skin pre-cancers, but also with other types of growths as well.