Dilatation of capillaries is also common in clinical practice, especially in women over 40 years of age, where the incidence is relatively high. This is because it is related to hormones and to venous pressure. Capillary dilation can be treated by means of sclerotherapy injection, using foam sclerosing agent to inject the liquid into the dilated capillaries, which can damage the endothelial cells of the blood vessels, so that the endothelial cells of the blood vessels form granulation tissue and then form fibrous fibrous tissue to close the lumen, which can achieve the role of aesthetic treatment. This method is relatively simple and convenient, and can completely solve the problem with a syringe. However, for more capillary dilation, one injection cannot solve all the problems and several injections are needed.