Radiofrequency (RF) refers to the frequency of the range of alternating currents, voltages, magnetic fields, electric or electromagnetic fields, or oscillating frequencies from about 20,000 times per second (20kHz) to about 300 billion times per second (300GHz) mechanical systems.
In human terms radio frequency is actually a high-frequency current, whether it is medical grade radio frequency or home, the main thing is to rely on high-frequency alternating electromagnetic waves, to see how many times per second change, to decide whether it is high frequency.
2, the principle of radio frequency
Radio frequency itself is a kind of electromagnetic wave, its propagation during the exponential decay. Radiofrequency energy can penetrate deeper into the skin, affecting the deep dermis and subcutaneous layer, resulting in skin tightening.
When the radio frequency acts on the skin, the radio frequency energy encounters the impedance of the skin tissue and generates heat, resulting in slight thermal damage in the dermis, the good thing is that the dermis itself has the ability to heal, especially after the micro-injury healing ability is even stronger (provided that you're young, the skin base is okay), the healing process will be able to produce collagen, elastic fibers can be rebuilt.
3, radio frequency system type
Radio frequency and radio frequency is also a difference between the number of different poles, different energy, the effect of the role of the effect will follow the different. According to this can be divided into:
Single-stage: that is, with a transmitter (an electrode) to transmit radio frequency energy to the skin, and then the other end of the ground through the body, that is, this radio frequency energy is to pass through the body, the depth of nature is the deepest. (Unipolar radio frequency is currently the mainstream of the medical beauty market)
Bipolar: there will be two poles on the surface of the treatment head, between the poles of the transmission of energy, the depth of action is shallower, more controllable, can only heat the dermis.
Multipolar: To put it bluntly, there are multiple unipoles or bipoles. Often they have a particularly short circuit, making the energy more controlled (less painful) but less penetrating (less effective).
That is to say, under the same conditions, the order of effectiveness is unipolar > bipolar > multipolar
4. How many times does radiofrequency work?
Radiofrequency treatment also needs to be according to the course of treatment, different equipment treatment course is different. Some radio frequency equipment energy, a treatment will be obvious skin tightening, the effect of being lifted. For example, Thermage, which can be done once a year.
While some need to be accumulated many times to appear obvious effect, such as deep blue radio frequency, usually a course of treatment needs 12 times, each interval of about 2-4 weeks.
(The above refers to medical radio frequency instrument)
5, home radio frequency instrument useful?
In fact, the biggest difference between the home radiofrequency instrument and the medical radiofrequency instrument is the size of the frequency, the energy level of the effect caused by the problem.
Often home radio frequency meter because of the consideration of security issues, so the use of bipolar and multi-polar radio frequency, and lower energy, shallow depth, so the temperature is better controlled, compared to a single level of radio frequency effect to be inferior, but long-term persistence is still a certain effect of lifting and firming.
SO, under the same conditions, the effect of medical radio frequency instrument & gt; home radio frequency instrument.
6, the contraindications of radiofrequency
Contraindications to the use of RF include:
Pregnancy
Any implanted electronic device (such as after hip replacement);
Any patient with dermatologic or collagen vascular disease;
Malignant tumors, any history of disease that may be stimulated by heat;
Current use of isotretinoin acid patients; patients with blood coagulation disorders.
In addition, treatment of patients who have undergone tattooing or with synthetic fillers (e.g., silicone) is not recommended.
In summary, in the power, temperature, electrode structure and other comprehensive factors can be seen, if you simply want to use home radio frequency instrument to achieve the effect of medical firming and lifting, it is unrealistic, but it is the heating of the epidermis may be able to achieve to stimulate blood circulation, increase the amount of oxygen supply to the skin.
Looking at it as an upgraded version of daily care, or using it as a means of follow-up maintenance to maintain the effects of medical radio frequency treatment can still be considered, anti-aging needs long-term persistence oh ~