After the PDT led light is absorbed by the skin, the light energy is transformed into intracellular energy, which listens to and strengthens the microvasculature and generates photochemical and enzymatic reactions with the skin, promoting the cellular. ATP (Adenosine Triphosphate), the source of energy generation, is broken down. Increases glycogen and protein content, thus promoting cellular metabolism. The PDT led light therapy accelerates cell growth and blood circulation, stimulating collagen production by fibroblast tissue, thus increasing skin elasticity, improving skin effect, and relieving sunburn.