Skin aging is the phenomenon of skin aging caused by natural or unnatural factors. After birth, skin tissues become increasingly developed and functionally active, and when they reach a certain age, they begin to degenerate, often slowly and unknowingly. The growth period of skin tissue generally ends around 25 years old, some people call this period “the bend of the skin”, since then growth and aging at the same time, skin elastic fibers gradually thicken, 40-50 years old, the aging of the skin slowly and obviously, but the degree of aging varies from person to person. Skin aging phenomenon is mainly manifested in two aspects: 1, skin tissue decline. The thickness of the skin changes significantly with increasing age. The human epidermis is thickest at the age of 20, and then gradually thins. Epidermal cell nuclear division increases, so melanin also increases, so that the skin color of the elderly is mostly brown-black. The dermis is thickest at the age of 30, and then gradually thins and atrophies. The subcutaneous fat decreases, and the elasticity and tension of the skin is gradually lost due to changes in elastic and collagen fibers, which further leads to skin laxity and wrinkles. 2.Low physiological function. The function of sebaceous glands and sweat glands declines, and the skin gradually loses its former luster and becomes dry. The blood circulation function decreases to replenish the necessary nutrients of the skin, so it is difficult for the elderly to heal their skin wounds. Types of skin aging 1.Natural wrinkles Mostly in the shape of horizontal arc, consistent with the physiological skin texture. Natural wrinkles are related to the subcutaneous fat content, and the wrinkles gradually deepen with age, and the skin between the lines sags. As in the case of neck wrinkles, in order for the neck to move freely, the skin here will be more abundant and naturally form some wrinkles, even just after birth. Early postural wrinkles do not indicate aging, only gradually deepened and aggravated wrinkles are the symbol of skin aging. 2, power wrinkles facial expression muscles attached to the skin, expression muscle contraction, the skin in the direction perpendicular to the expression muscle will form wrinkles, that is, dynamic wrinkles. Dynamic wrinkles are due to the long-term contraction of the expression muscle. Early only expression contraction, wrinkles appear, later expression does not contract, power wrinkles also do not reduce. Such as long-term forehead muscle contraction forehead horizontal lines, in youth can appear; and crow’s feet is due to the contraction of the orbicularis oculi muscle, especially when laughing, also known as laugh lines. 3, gravitational wrinkles Gravitational wrinkles are on the basis of skin and its deep surface soft tissue relaxation, and then due to the role of gravity and the formation of creases and wrinkles, heavy wrinkles are mostly distributed in the periorbital area, zygomatic arch, jaw area and the neck. 4, mixed wrinkles caused by a variety of reasons, the mechanism is more complex, such as the nasolabial folds, wrinkles around the mouth. Prevention of skin aging essentials 1, maintain general health, maintain a cheerful and optimistic mood, adjust the bad psychological state; regular life, reasonable nutrition, balanced diet; adhere to appropriate physical labor and physical exercise, rich recreational life; pay attention to rest and sleep, develop good health habits, prevention and control of various diseases. 2, pay attention to the protection of the skin, avoid trauma, sunlight, strong wind, cold, heat and chemical injury, maintain skin hygiene, often correct massage skin. 3, pay attention to dietary nutrition, not partial food, less white rice, white flour, limit salt, both sufficient protein, fat, carbohydrates, but also rich vitamins and necessary minerals, enhance skin elasticity, delay the appearance of wrinkles. 4, to adjust the habits of life, change the laugh, wrinkle nose, frown, mimi eyes and other bad action: do not stay up late, avoid insomnia, to achieve a combination of work and rest, happy spirit. Anti-wrinkle anti-wrinkle products selection 1, containing hydrolyzed protein and vitamin E skin care products: can slow down skin aging, stretch wrinkles. 2, hyaluronic acid original or extract: hyaluronic acid exists in large quantities in human tissue and has the effect of preventing water loss. Due to ageing and photo-aging causes hyaluronic acid loss leading to skin aging, by supplementing hyaluronic acid to increase water in tissues, it can fill the skin and wrinkles disappear with it, therefore, injections, topical and oral hyaluronic acid is actually similar to the role of hydration and moisturizing. 3, collagen solution: it contains collagen composition is an elastic fiber protein, and collagen between the main ingredients to support skin elasticity. In the human skin under the epidermis there is a thick layer of dermal tissue, 90% of which is collagen composition. When collagen is reduced, the elasticity of the skin is reduced and the mesh tissue fibers become stiff, which accelerates the aging of the skin, resulting in wrinkles, sagging and sagging. When the skin lacks collagen, the skin begins to age. So collagen for aging skin has excellent improvement effect, and for the wound healing effect is excellent. 4, to prevent wrinkles food: tomatoes, carrots, pumpkin, cucumber, pig skin, honey, silver fungus and other foods with high collagen content. Skin aging medical cosmetic treatment methods There are many methods to treat skin aging, usually using non-surgical methods, including microplasty, injections, laser, buried lines, etc. The commonly used methods are: 1. Hyaluronic acid injection is mainly applied to static lines, such as eliminating nasolabial folds, and can also be used for shaping the nose bridge and nose tip, improving sunken deformities, lip augmentation, and jaw augmentation. The application principle is that hyaluronic acid exists in large quantities in human tissues and has the effect of preventing water loss. As the lack of water causes the skin to age, the moisture in the tissues fills up the skin as soon as it is available, and wrinkles disappear with it, therefore, hyaluronic acid injection is actually similar to the role of hydration and moisturizing. Hyaluronic acid, which is often referred to as hyaluronic acid, is a type of hyaluronic acid. Effect: Hyaluronic acid can improve wrinkles and make the face look more youthful. 2, botulinum toxin injection is mainly used to reduce or eliminate dynamic lines, used to remove the forehead lines, frown lines and part of the crow’s feet. Effect: The repeated contraction and fatigue of dynamic lines (i.e. expression muscles) is an important factor in skin aging. Injecting Botox into the expression muscles temporarily paralyzes the muscles that make expressions, thus making the wrinkles disappear. People will look much younger, the skin becomes tighter and more elastic 3, protein thread thread sculpture is made of protein medical sutures or absorbable sutures, the buried threads are naturally absorbed by the body in about 6 to 9 months, and activate (fibroblast) fibroblasts, so that the skin is full of elasticity and tight skin for a long time. The PPDO protein thread is a collagen micro-molecule that is metabolizable and does not remain in the body, so it is safe and has no side effects.