After 6 years of strict approval, Swedish hyaluronic acid (Rilan) has a license in our Ministry of Health and can be used for cosmetic injections. Hyaluronic acid is a multifunctional matrix, and Rilan hyaluronic acid (vitreous acid) HA is widely distributed in all parts of human body. Among them, the skin also contains a large amount of Rilan hyaluronic acid. Human skin maturation and aging process also changes with the content and metabolism of Rilan hyaluronic acid. It can improve skin nutrient metabolism, make skin soft, smooth, remove wrinkles, increase elasticity, prevent aging, and be a good transdermal absorption promoter while moisturizing. Used in combination with other nutrients, it can provide a more desirable effect of promoting nutrient absorption. When used for rhinoplasty and chin augmentation, it has the advantages of almost non-invasive, fast recovery and low risk compared with traditional silicone prosthesis and expansion. However, the latter may be more advantageous in terms of shaping. This is especially true when the lack of tissue volume is more severe (some particularly severe cases require rhinoplasty with rib cartilage).