The concept of photorejuvenation is more common now, and there are many different concepts, especially with the English acronym, which is really confusing, if people who do not know much about medical beauty are really easy to be fooled. The first one is photorejuvenation = Intense Pulsed Light = IPL Photorejuvenation is called Intense Pulsed Light (IPL), which is directly translated as Intense Pulsed Light. It is not a laser, but a broad-spectrum light wave that can cover a variety of target chromophores such as melanin, oxidized hemoglobin, water and many other absorption peaks, based on the theory of selective photothermal action. Simply put, if done properly, photorejuvenation, a medical aesthetic technique, is able to both fight off discoloration and coagulate blood! And using its bio-stimulating effect, it can also stimulate the regeneration of collagen and regulate oil secretion, thus improving skin quality such as sagging skin, wrinkles and enlarged pores. What makes the beauty seekers more excited is that as a non-invasive beauty technology, it has the characteristics of quick operation, do as you go, and long-term persistence, the skin unconsciously restored white and shiny, also known as “lunch beauty”. The OPT is a great leap forward in photorejuvenation technology and greatly expands the scope of application of IPL technology. Compared to traditional photorejuvenation, the photorejuvenation technology with OPT technology core has superior efficacy and safety. OPT is a homogeneous square wave that allows effective control of the entire treatment process: eliminating the energy peak at the beginning that exceeds the treatment energy to improve safety; avoiding the subsequent pulse energy decay that fails to reach the treatment interval to improve clinical effectiveness. In short, OPT gets rid of the drawbacks of traditional photorejuvenation, allowing doctors to apply the maximum range of energy and pulse width, thus making the treatment more effective, while it is also safer for beauty seekers to receive treatment, effectively avoiding thermal damage to the skin from the invalid spectrum, reducing the risk of burns, and making the skin rejuvenation treatment process more gentle and enjoyable. The blue-green spectrum of strong pulsed light can be selectively absorbed by the hemoglobin contained in the red blood cells, producing a strong photothermal effect in an instant, and the heat is conducted to the endothelial cells of the capillaries, and if the heat time is long enough, the blood vessels will undergo coagulation and denaturation (similar to the process of steaming chicken cake). The capillaries that lose the function of contraction and diastole after the degeneration will be broken down and absorbed by the body’s phagocytic system and gradually eliminated. 2.Freckles The introduction of intense pulsed light has brought about an epoch-making change in the treatment of freckles and freckle-like nevi. The treatment principle of intense pulsed light is “selective photothermolysis”. The photon energy is selectively absorbed by the pigmented vesicles in freckles, which are instantly broken up by the blasting effect. The broken melanin dust either falls off with the skin flakes or is swallowed by macrophages and discharged from the body with lymphatic circulation. The skin after IPL treatment is not more sun-shy than before. Most patients only need 2-5 times with 3 weeks interval to say goodbye to freckles/ freckle-like nevi completely. However, you must develop a good habit of sun protection to avoid new freckles from growing out again. 3, acne, acne marks, large oil fields (1) strong light can be specifically absorbed by the sebaceous glands, thus shrinking the enlarged glands, restoring the original volume, improving the seborrheic state and reducing pores; (2) it can decompose the blackheads at the mouth of the hair follicles, making the mouth of the hair follicles open and facilitating the smooth removal of the contents; (3) it can stimulate the protoporphyrin synthesis of acne bacilli, resulting in a photosensitive reaction, which in turn kills acne bacilli; (4 (4) It has a strong photomodulation effect, which can eliminate local inflammation and promote the elimination of erythema, marks, and capillary dilation; (5) The strong light can help the collagen renewal of the dermis as well as rearrangement, which is beneficial to the recovery of acne scarring. The advantages of photorejuvenation are 1. only slight pain during the procedure; 2. short treatment time, 15-20 minutes per treatment; 3. quick recovery after the procedure, no missed work period, lasting and superimposable treatment effect; 4. non-exfoliating physical therapy, highly directional, accurate action site, no damage to surrounding tissues and skin appendages; 5. adapt to different skin states, safe and effective, no skin damage. Finally, we remind you that during breastfeeding, pregnancy, malignant tumor, serious internal diseases, photosensitivity (red spots, rashes, itchy skin after exposure), oral photosensitive drugs, oral isotretinoin, etc., it is recommended not to undergo intense pulsed light treatment temporarily to avoid unnecessary side effects.