Photodynamic Therapy (PDT) is composed of light-emitting diodes(LED) of high irradiance and low electric current, it kind of safety shine. It use light wave of low electric current to permeate into dermis directly. In the Photodynamic therapy, it affected skin recovers faster, producing a new collagen under the skin, It can be used to reduce lines and wrinkles in the skin, it can also reduce pore size, age spots and acne, making the skin looks more health.