I. Indications for intense pulsed light 1. skin rejuvenation, that is, photorejuvenation; 2. vascular diseases; 3. pigmentary diseases; 4. hirsutism; 5. inflammatory skin diseases: acne vulgaris, rosacea, etc.; 6. scarring, etc. Contraindications of intense pulsed light (a) absolute contraindications 1. photosensitive skin and suffering from photosensitivity-related diseases, such as lupus erythematosus; 2. treatment area lesions for malignant tumors or pre-cancerous lesions; 3. active infection or open wounds in the treatment area; 4. treatment expectations are too high for beauty seekers. (B) Relative contraindications 1, oral retinoids; 2, history of sun exposure within the last month; 3, postoperative sun protection cannot be achieved; 4, pregnancy or lactation; 5, keloid; 6, primary or acquired immune deficiency (taking glucocorticoids or immunosuppressants, etc.); 7, coagulation abnormalities; 8, suffering from psychological and psychiatric diseases or unable to cooperate with treatment; 9, other serious systemic diseases 9. Those who have other serious systemic diseases. Third, the strong pulse light preoperative preparation 1, preoperative communication As strong pulse light usually requires multiple treatments, the interval of 1-2 months or even longer. Therefore, you should fully communicate with the treating physician before surgery, the treatment effect of intense pulsed light within a reasonable expectation. The treating physician should also inform the patient of the risks, benefits, adverse effects, and other treatment options available. The treating physician should inform the patient in advance of any pain or other discomfort that may occur during the treatment to reduce the patient’s psychological anxiety. For treatment expectations, post-operative care and complications and other issues should be communicated in detail with the attending physician, and post-operative review should be conducted according to medical advice to avoid poor results due to miscommunication. 2.The attending physician should thoroughly clean the treatment site and lesion area of the patient, and take photos for the evaluation of the treatment effect. 3.The attending physician should ensure that the machine is running normally and performing well. 4, pay attention to eye protection, in the treatment process, both medical staff and candidates need to bring goggles or effective coverings (such as eye shields, etc.). Tips: Why is it necessary to take photos for archiving before surgery? Often it is difficult for people to remember exactly what they look like before surgery, and many subtleties are often overlooked, so it is necessary to take photographs before surgery. The photos are kept as medical records for comparison of results before and after surgery and for discussion and research between the patient and and the surgeon. It is a routine practice to take photos before and after surgery. When taking pictures, the patient should be careful not to wear makeup and to record the original shape of the surgical site in the most realistic way. It is a good idea to take pictures of the surgery to compare and observe the real results before and after the surgery, which is a strong guarantee for both doctors and patients. At the same time, people who have undergone plastic surgery will be overly concerned about the changes in their appearance after the surgery, and will often also find some details that they did not notice before, mistakenly thinking that they were caused by the surgery. This is where your anxiety can be quickly alleviated by simply pulling out the previously archived photos for comparison.