Photodynamic Therapy – PDT A Serious and Painful 2-Step Procedure for Moderate-to-severe Acne Consisting of Topical Application of a Photosensitizing Agent Followed by Shining Red and/or Blue Light on the Skin
Light Therapy – Blue and/or Red Light Red and/or Blue Light May Reduce Acne to Some Degree, but Should Be Combined with Other Treatments