Using cold light of different wavelengths with corresponding products to stimulate blood circulation through light waves, activate cell components, and accelerate epidermal metabolism, so that the treatment effect can achieve significant results. PDT with 4 kind lights.3 version optional.180 degree illumination can be adjusted. No repair period, no risk of burns. Manual and automatic modes are optional. Accelerate nutrient absorption. Stable performance. Shrink pores. Anti-aging. Skin rejuvenation. Reduce wrinkle. Skin tightening. Rejuvenate skin, promote absorption, activate cells, lymphatic drainage, improve skin elasticity. Rejuvenate skin, promote absorption, activate cells, lymphatic drainage, improve skin elasticity. For calming allergic skin, repairingacne, suppressing acne bacteria.syi