The face is a symbol of good color, it brings shy beauty for young girls, for mature women bring charming beauty, but all year round face is red, then we should be careful of facial capillary dilation (commonly known as red blood). This “good look” is not only about beauty and aesthetic issues, but also about the health status of the skin. The causes of red blood is diverse, some are because of the temperature difference between high temperature DD capillary dilation, low temperature DD capillary constriction. This repeatedly vasodilation and contraction dysfunction after capillary dilation and produced the red blood silk. It is also due to artificial injury or improper care, such as excessive massage, steaming, exfoliation to destroy the outer sebaceous film of the skin, drinking strong wine and eating spicy food, and vitamin deficiency, such as vitamin C deficiency may also lead to poor vascular elasticity. Principle: Through the principle of light coagulation, it causes the closure of blood vessels, while stimulating the regeneration of skin collagen fibers, the reorganization of elastic fibers, the rapid absorption of energy by hemoglobin, and the thickening and contraction of capillary walls, thus achieving the efficacy of removing red blood vessels. Indications: Treatment of red face caused by capillary dilation, spider nevus, red blood, erythema and birthmark. Treatment: Laser treatment for erythema requires 3-5 treatments, each at an interval of 2 months, and each treatment takes about 20 minutes. The scab will fall off on its own, do not use your hands to remove it, otherwise the pigmentation will be serious; after the scab falls off, there may be temporary pigmentation in the area, you can reasonably apply sunscreen; after the laser treatment there will be a slight burning sensation and slight redness of the skin in the treatment area, this is a normal reaction. After the treatment, the treatment area should be cooled for 30-60 minutes to eliminate or relieve the redness and heat.