Methylene Blue Photodynamic Therapy: A Simple Guide to Cancer Treatment + DIY at home What Is Methylene Blue Photodynamic Therapy? Methylene blue photodynamic therapy (MB-PDT) is a treatment that uses a special dye called methylene blue, red light, and oxygen to fight diseases like cancer. The dye soaks into unhealthy cells, and when red light … Continue reading Methylene Blue Photodynamic Therapy: A Simple Guide to Cancer Treatment