Ira Photodynamic is a relatively new treatment option for skin warts or other skin diseases that utilizes the principle of first applying Ira San to the area of the rash. It is a photosensitizing agent that is absorbed by the lesioned tissue of the rash, and after it is fully absorbed, a photosensitizing reaction is formed in the body by the corresponding spectral light, allowing the absorbed lesioned tissue to enter into an apoptotic reaction. The treatment of common plantar warts, condyloma acuminata, and some other common warts, and now often used to treat acne, the principle is the principle just described, the photosensitizer is absorbed by the lesion tissue, and then use the light to form a photosensitive reaction to destroy the lesion tissue, to achieve the therapeutic effect.