Before nose shaping, please keep your skin clean, and any cosmetics and skin care products need to be cleaned. You can use facial cleanser and toner to clean your skin. Wash and shrink pores with cold water. Do not take anti-inflammatory drugs for at least 3-4 days before treatment, because it may aggravate the bleeding and swelling at the injection site. After the injection treatment, please keep your face relaxed and don't make too many facial expressions. For at least two weeks after treatment, please avoid contact with high heat environment, because this may lead to the rapid decomposition of hyaluronic acid injected into the face, thus shortening the filling effect.