Photorejuvenation technology, also known as Intense Pulsed Light (IPL) technology, is different from laser in that photon is a spectrum of multi-wavelength light. This technology has many functions that facial treatments and cosmetics cannot achieve, because light has penetrating properties, so it can achieve the function of deep maintenance, and in foreign countries beauty seekers almost regularly repeat the technology treatment, but in China people do not accept it enough, always worried about the post-operative risks, for example, many people in the clinic will ask, after photon treatment, will the skin become thinner? Will it become sensitive? Will they be afraid to sunbathe in the future? In fact, from the mechanism of photon therapy, it is through the principle of photothermal action, acting with specific target tissue, so it will not make the stratum corneum thinning, domestic scholars have done relevant scientific research found that: photons not only will not make the stratum corneum thinning, but on the contrary will make the damaged stratum corneum rearranged and thickened. Why do some people feel that the skin has become thinner and more sensitive after photorefractive surgery, in fact, this is related to the improper application of some so-called post-operative repair, whitening and maintenance of skin care products, some skin care products contain hormones or mercury and lead over the limit, these ingredients can destroy the keratin, making the skin thinner and more sensitive at the same time, there are 1-2 weeks after photorefractive treatment, the skin will temporarily become a little dry, so after treatment requires the strengthening of moisturizing care, you can use some hydration, moisturizing mask. You can use some hydration, moisturizing mask paste, less powder and whitening, spot products; photon surgery in order to avoid pigmentation and better maintain the efficacy of the general requirements of sun protection, in fact, sun protection is a common sense life, whether phototherapy or not, we have to protect the sun, skin aging medical called “photoaging”, it is obvious UV radiation is the main “culprit” of our skin aging, so from a care point of view, long-term sun protection is needed, not just because of phototherapy.