In medical beauty, injection lip augmentation, earlobe, rhinoplasty, face-lifting and wrinkle removal all belong to injection micro-plastic surgery projects, then? According to plastic experts, commonly used injection cosmetic materials include hyaluronic acid, botulinum toxin and collagen. Although they are all injection molding materials, they have their own characteristics. Hyaluronic acid is mostly suitable for filling static texture or skin parts, botulinum toxin is suitable for dynamically expressing lines, and collagen is suitable for relatively long-lasting bodies that do not need to be changed. Hyaluronic acid (HA) or uronic acid, a cosmetic material for hyaluronic acid injection, is a linear macromolecular polysaccharide composed of disaccharide units (glucuronic acid -N- ethylglucosamine). It is a transparent and viscous gelatinous substance in appearance and a natural substance in human tissues. Hyaluronic acid was originally used for moisturizing, but it has been included in the application range of soft tissue filling because of its insolubility, low metabolic rate, high water absorption, high water retention and difficult tissue transfer. This plastic technique is to use non-animal stable hyaluronic acid fermented by bacteria, and inject hyaluronic acid into the wrinkles and depressions of dermis or the parts that want to become rich by filling, so as to achieve the effect of removing wrinkles and modifying the face, which can immediately remove wrinkles and change the appearance. As we get older, our faces not only tend to get thinner, but also droop. This is because the older you get, the soft tissue and superficial fat layer on your face gradually fade away, and collagen gradually loses. In addition, the thin lips often give people a bitter feeling, while the drooping corners of the mouth have a bad karma and unpleasant feeling. The best lip shape is to look like a "gold ingot". The corners of both sides are upturned, the lips are full and wrinkle-free, and the lower lip is slightly thicker than the upper lip. Therefore, in order to improve thin lips and smooth fine lines, it is best to inject hyaluronic acid. At the same time, hyaluronic acid can also make risorius look full and moist, increase the bridge of the nose and dilute the bags under the eyes and lacrimal glands. Generally speaking, the effect of hyaluronic acid injected into the body is about 6 to 9 months, but this is related to the different injection sites and personal physique. For example, when used for lip plastic surgery, it can last shorter than other facial parts. Botulinum toxin injected into beauty materials is a neurotoxin produced by Botox. It has been used to treat muscle dyskinesia such as hemifacial spasm, paralyze muscle nerves to stop muscle spasm, and is now used for medical beauty. Botulinum toxin can block the nerve impulse between nerve and muscle, relax the over-contracted small muscles, and then achieve the effect of wrinkle removal, face reduction and eyebrow shape improvement. Botulinum toxin injection is particularly effective for dynamic wrinkles. After treatment, facial muscles can remain smooth, while untreated muscles can still contract normally, so it generally does not affect normal facial expressions. Botulinum toxin has obvious therapeutic effect on vertical frown lines in the middle of eyebrows, crow's feet and laugh lines in the corner of eyes, and horizontal forehead lines produced when looking up or looking up. It also has a certain therapeutic effect on wrinkles between nose and lips, wrinkles around mouth, chin depression or wrinkles. In addition to wrinkle removal, botulinum toxin injection can also thin face and improve eyebrow shape. Some people have square faces and stiff lines because the masticatory muscles on both sides are too developed. Botulinum toxin injected into the developed masticatory muscles can make the muscles atrophy, gradually turn the Chinese character face into a melon face, and the facial lines will become soft. Some people have drooping eyebrows and look listless. Botox can be injected to adjust the eyebrow shape, or Botox can be injected under the eyebrows to raise the eyebrows. According to the traditional concept of injecting collagen into beauty materials, people with thick earlobes are good at making friends and being kind and generous to people. Not only that, a full earlobe can also look full of energy, and it is also suitable for wearing accessories to increase the aesthetic feeling. Generally speaking, if you want the earlobe to be full and lasting, you can choose to inject collagen. Collagen is a kind of biopolymer, accounting for more than 30% of protein. There are about 3 kilograms of collagen in an adult human body, which widely exists in human skin, bones, muscles, cartilage, joints and hair tissues, and plays a triple anti-aging role of support, repair and protection. Injecting collagen can enrich the earlobe, chin, lips and temples. In addition, collagen can also remove head lines, eyebrow lines, tears, crow's feet lines, decree lines, apple lines, lip lines and neck lines.