Beauty, especially medical aesthetics with its professional and technical characteristics, is developing vigorously and robustly as in the case of China, and the industry is gradually reaching the forefront of the world in terms of scale and professionalism, which makes the people of China, who admire beauty literacy, and those who specialize in the beauty industry very proud and excited.
Beauty lovers are familiar with, according to our customary understanding: beauty as a service and technical industry to meet people’s aesthetic qualities, roughly divided into two major parts.
1.Life beauty
That is, to improve the skin condition, body condition, psychological condition, beauty condition by cleaning and maintenance, comfort and relaxation, conditioning and stress reduction, food therapy and detoxification, and so on. Because they use means and methods are extremely safe, comfortable, will not bring the body damage and harm, so generally accepted and loved by people. For example, people often patronize beauty salons, spas, beauty clubs are places that provide life beauty services. Many people also do some simple personal beauty care at home itself.
2.Medical beauty
It is a beauty service based on medical technology, which is part of the medical service field, and is also under the strict management of the medical and health administration department. The service means methods are surgery, laser, drugs, instruments, materials and so on. The changes brought about by medical aesthetics are also very clear, such as single eyelids into double eyelids, collapsed nose into a beautiful nose with shape, the “flat princess” can become a proud “bosom”, freckled women can become white beauty, the hateful black birthmark can be restored It can be said that “medical beauty can do anything”, such as “sparse teeth” can become a mouthful of neat and white beautiful teeth.
It is true that the “beautiful transformation” of medical aesthetics is often accompanied by fear, pain, disturbed life and work, and although very rare, medical risks. These situations largely hinder the confidence and courage of beauty lovers, resulting in many people being held back at the door of “beauty transformation”.
With the continuous progress of people’s aesthetic and beauty concepts, beauty methods that can meet people’s “beauty transformation” and be easily accepted by everyone are becoming the focus of attention in the beauty industry. Only when there is demand will there be progress, and when there is demand, there will be progress. Such a concept, such a technology, such a method has been quietly formed, and the rapid development of the “rapid” momentum, but also by the majority of beauty lovers gladly accepted, just a few years still become the great river up and down, the Great Wall inside and outside the new favorite beauty, which is the most popular, the most popular in the future ” Non-invasive beauty”.
Non-invasive means no trauma and skin breakage, no skin breakage and no bleeding. Medicine, especially surgical medicine, is often accompanied by invasive, that is, in the process of treating diseases and saving lives, it is difficult to avoid the destruction or damage of body tissues, which will leave scars and other regrettable problems.
Non-invasive medicine is the direction that medicine will always pursue. Non-invasive beauty is the supreme development trend of medical beauty. At present, the most representative non-invasive cosmetic technology such as non-invasive injection cosmetic surgery, non-invasive laser cosmetic surgery, non-invasive radio frequency cosmetic surgery, non-invasive ultrasound cosmetic surgery, etc. have been better applied.
Non-invasive injection cosmetic surgery
Abbreviated as injection cosmetic surgery, also called cosmetic injection. It refers to the medical cosmetic technology that applies injection to inject specific drugs or materials into specific parts or areas of the human body to achieve its beauty and rejuvenation changes such as defect repair, contour adjustment, wrinkle improvement or skin quality improvement. In particular, cosmetic injections emphasize local improvements caused by local injections and should not be accompanied by systemic effects. Cosmetic injections are a serious medical technique and can only be performed in medical institutions by specially trained doctors.
Cosmetic injections can be divided into the following categories.
(1) Botulinum toxin cosmetic injections
This type of technology is special in that it acts by changing the function of local tissue cells. At present, it is successfully used in A-type botulinum toxin injections, which can selectively cause muscle relaxation paralysis so that muscle fibers cannot contract, muscle tone is reduced, and muscle spasm is relieved. Therefore, it is used in the field of aesthetics for the improvement of dynamic wrinkles and other areas.
(2) Filler-type cosmetic injection
As the name implies, filler injections are designed to inject filler materials to achieve cosmetic improvements such as repairing defects and adjusting contours. This type of technique emphasizes that the injected material should have certain stable volumetric characteristics and be able to achieve lasting or relatively permanent stable changes, with morphological changes as the characteristics of this type of technique. At present, there are mainly two types of materials available, one is from the body tissue materials such as autologous fat; the other is exogenous materials, mainly composite materials such as Avef (Artecoll), Outline & Evilan (Outline&Evolution), etc. Due to the capacitance, stability and safety characteristics of these materials, they are increasingly used for the improvement of static wrinkles, correction of local defects, adjustment of facial contours, and plastic surgery of the five senses.
(3) Complementary cosmetic injection
This type of technique refers to the supplementation of declining or lost components in local skin or tissues by local injection, or the supplementation of certain components to enhance their cosmetic or rejuvenation improvement. This type of technique emphasizes the injection of materials or solutions that are mainly aimed at replenishing the lack or deficiency of tissue cells, or at improving the function of tissue cells. The emphasis on replenishment of deficiencies and improvement of functions is the characteristic of this type of technique, which is expressed in the form of having a considerable filling function. Typical materials include hyaluronic acid, collagen, growth factors, autologous fat, autologous fibroblasts, etc. The scope of application also has tendencies, such as improvement of fine wrinkles, improvement of rough and dry skin, repair of atrophic wrinkles and swelling lines, improvement of skin texture aging, etc.
As market products, some of them have compound characteristics, and the more common one is the compound of filler and complementary products.
Non-invasive cosmetic laser surgery
Refers to cosmetic laser techniques that are not accompanied by significant skin tissue destruction or disfigurement. The type of laser action used is a non-ablative or microablative laser type laser.
The action of the laser is achieved by heating the target tissue, i.e. the photothermal effect. The basic histological change of skin aging is the reduction of dermal collagen fibers, which leads to skin atrophy, manifested as increased wrinkles and skin laxity. Numerous experiments have demonstrated that the dermal tissue is heated. New collagen can be produced by collagen cells either directly or by activating a series of related cytokines. Non-invasive medical aesthetic techniques can be carried out as long as they conform to the laser that selectively heats the dermis directly without destroying the epidermis, or a form of laser that is accompanied by micro-exfoliation changes in the epidermis but does not cause complications.
Currently, several lasers have been used for non-invasive aesthetic treatments with the aim of heating the dermis and stimulating its collagen cell activation to produce more collagen fibers for cosmetic improvement. Such as Nd: YAG laser (1064 nm, 1320 nm), Er: YAG laser (1540 nm, 2940 nm), semiconductor laser (940 nm, 1450 nm), pulsed dye laser (585 nm, 595 nm), intense pulsed light (photon, OPT), etc. Their common features.
(i) Longer wavelengths and high tissue penetration.
(ii) Long pulse duration (pulse width) for slow and continuous tissue warming.
③ Most of them are equipped with epidermal cooling devices to protect the epidermis from damage. We may call these lasers non-invasive cosmetic lasers, and accordingly their technology is called non-invasive cosmetic laser technology.
In recent years, “minimally invasive skin rejuvenation technology” has emerged, that is, the use of specific wavelengths of laser irradiation of local skin, the formation of thousands of 70-100um diameter micro thermal zone (micro thermal zone, MTZ), resulting in micro-hole and its surrounding thermal damage (fractional These micro-pores only account for 10%-20% of the treatment area. These are the pixel laser, fractional laser or segmental resurfacing laser technologies, which have opened up a new dimension in non-invasive cosmetic laser technology.
Different wavelengths of lasers bring different cosmetic effects, but the overall scope of application is basically similar.
(1) Treatment and improvement of superficial pigmentation spots, such as melasma, freckles, pigmentation, melanosis, aging spots, etc.
(2) To improve superficial or fine wrinkles to make the skin look younger or “rejuvenated”.
(3) Improve skin texture aging, including rough skin, large pores, dull skin tone, etc.
(4) Improving mild to moderate skin laxity and sagging, firming the skin and making limited contour adjustment.
(5) Improve superficial or small scars, such as acne scars, superficial worm-like scars, and swelling lines.
(6) Removal of capillary dilation and red face.
(7) Removal of troublesome hair.
Non-invasive radiofrequency cosmetic surgery
In recent years, radiofrequency (RF) technology has become the newest non-invasive aesthetic favorite after laser and photon. It is through hundreds of kilohertz to several megahertz of alternating current pulses heating the skin, play stimulate the dermis to produce new collagen fibers, so as to achieve skin tightening, wrinkle removal and other effects to improve the texture of the skin. Some studies have confirmed the effectiveness and safety of this cosmetic technology.
Radio frequency refers to the electromagnetic waves that can be emitted and propagated, usually we call the alternating current that changes less than 1,000 times per second low frequency current, greater than 10,000 times called high frequency current, and radio frequency is such a high frequency current. In medicine, the frequency 0.5MHz~8MHz or higher AC high frequency current is called RF electric wave. The electric zeppelins of this frequency generate heat by molecular resonance principle of abrasion. This selective heat acts on the deep dermis and deep fibrous compartments, i.e. from the dermis to the fascia and fibrous tissues, which can thicken the dermis of the skin, and wrinkles subsequently become lighter or disappear; among them are mainly collagen fibers, which remodel the morphology of subcutaneous collagen and produce new collagen, thus tightening the skin and reshaping the facial shape.
The biological effect of radiofrequency: the action of radiofrequency dielectric molecules are mainly water molecules, under the action of high-frequency waves water molecules produce depolarization change and high-speed movement, resulting in different degrees of thermal effect. The thermal effect produces thermal stimulation to make the dermal collagen tissue new. At the same time, the thermal effect brings about an increase in blood circulation in the subcutaneous tissue and an increase in oxygen supply, which promotes the improvement of skin texture.
The effects of radiofrequency are manifested in stages.
①Immediate effect: immediate contraction of collagen fibers, skin tightening and refinement.
② Long-term effects: reconstruction and renewal of collagen, such as wrinkle reduction and lightening, smooth, elastic and rejuvenated state of the skin.
Radiofrequency is used in the following areas of beauty.
(1) Wrinkle removal, skin tightening – forehead, periocular, peri-nasal and lip wrinkle removal, and body tightening.
(2) Lifting, sculpting – skin tightening, face lifting, face sculpting, etc.
(3) Lipolysis, body sculpting – tightening and weight loss of cheeks, jaw, neck, limbs, buttocks, etc. and cellulite.
(4) Repair of stretch marks.
(5) Improving skin metabolism and rejuvenation.
The changes are mild to moderate and cannot be judged by the criteria of surgical changes.
Non-invasive ultrasound cosmetic surgery
Ultrasound refers to sound waves that are beyond the range of hearing of the human ear. There is a distinction between diagnostic and therapeutic ultrasound for medical use. Therapeutic ultrasound uses low frequency (usually <1MHz) and high intensity ultrasound, while high intensity (especially after focusing) ultrasound can produce strong biological effects on tissues, including selective destructive effects on focal lesions or tissues.
Non-invasive ultrasound aesthetics can be understood in two main types, one for ultrasound introduction and ultrasound physiotherapy, and one for ultrasound blasting or lysis effects. The mechanism of action is summarized as follows.
(1) Mechanical effect
Ultrasonic power, energy, the role of the face can make the skin cells vibrate, produce microscopic massage effect, change the cell volume, thereby improving the circulation of local blood and lymphatic fluid, enhance cell permeability, improve tissue metabolism and regeneration capacity, softening tissue, stimulate the nervous system and cell function, so that the skin is lustrous and elastic.
(2) Warming effect
Through the warming effect of ultrasound, it can raise the temperature of the skin surface, accelerate blood circulation, increase the nutrients of skin cells, reduce the excitability of nerves, play the role of analgesia, relax the spastic muscle fibers, and play the role of antispasmodic. The heat of ultrasound is endogenous heat, 79% to 82% of the heat is carried away by the blood from the area of action, 18% to 21% by heat conduction and dispersion to the adjacent tissues, therefore, the patient does not feel obvious heat.
(3) Chemical effect
Ultrasound can strengthen the catalytic ability to accelerate the metabolism of skin cells, so that the tissue pH change to the alkaline direction, reduce skin inflammation accompanied by acidosis and pain. Ultrasound can improve the permeability of the cell membrane, so that nutrients and drugs depolymerization, facilitate the absorption of nutrients in the skin, facilitate the penetration of drugs into the body of bacteria, improve the sterilization ability.
(4) Burst lysis
Especially under the action of focused ultrasound, the mechanical effect of ultrasound causes extreme changes in the permeability of tissue cells, or even cell membrane rupture, cell content lysis, etc.
Ultrasound is widely used. In the field of beauty, ultrasound was first introduced into the application of ultrasound import, ultrasound physiotherapy, the application is very common. In recent years, research shows that ultrasound lipolysis has made important progress, using the principle of focused ultrasound can make subcutaneous fat cells can be dissolved or even burst. It is expected to reduce part of the fat in a non-invasive condition to achieve the purpose of weight loss and body shaping. It deserves attention.