Photosensitizers activated by a specific wavelength of light produce cytotoxic species to destroy cancerous, precancerous cells, bacterial, fungus and virus. Today several photosensitizer drugs are available to treat various diseases, including acne, psoriasis, age-related macular degeneration, and several cancers, such as skin, lung, brain, bladder, pancreas, bile duct, esophagus, and head and neck. The costumed light source or prototype is offering.