The CRYSTAL LED beauty device utilizes the principle of phototherapy to activate deep subcutaneous cells and improve skin conditions by emitting specific wavelengths of beneficial light. It is a non-invasive, chemical-free, painless, and safe skincare method. When light is absorbed by the skin, it is converted into energy within the cells, triggering a photochemical reaction known as enzymatic reaction. During this process, a significant amount of glycogen and proteins are produced, promoting cellular metabolism and collagen regeneration, resulting in the effects of skin rejuvenation, whitening, acne reduction, oil control, firming, soothing, and wrinkle repair.