Photorejuvenation and hydraluminescence are two different items. Photorejuvenation penetrates the skin with different wavelengths of light, the superficial light can improve the pigmentation of the skin, including blood vessels, and the deeper light can stimulate the proliferation of collagen and elastin inside the skin to achieve the effect of skin tightening, so photorejuvenation can get rid of skin pigmentation and pigmentation, which can lead to capillary dilation and can achieve skin tightening It can also reduce wrinkles and overall enhance the function of skin facial rejuvenation. The main purpose of hydration injection is to inject small molecules of non-cross-linked hyaluronic acid into the superficial layer of the skin dermis, which can absorb and lock water to achieve the effect of hydration. The two are different, so they are different treatments. You have to choose different treatments according to your skin condition and the purpose you need to achieve.