Photothermal Therapy is a medical treatment that uses heat to destroy cancer cells. It involves the application of light, often from lasers, to a targeted area, where special materials called nanoparticles absorb the light and convert it into heat. This localized heating raises the temperature of the cancerous tissue, leading to cell death while minimizing damage to surrounding healthy tissue. This therapy is being researched for its effectiveness in treating various types of cancer, including breast cancer and prostate cancer. It is considered a minimally invasive option, offering potential benefits such as reduced side effects and quicker recovery times compared to traditional treatments like chemotherapy or radiation therapy.