Previously, different types of lasers were introduced. Now, let’s talk about “radiofrequency”. Do you know what it is and what its beauty effects are?
First, let’s introduce some physical knowledge about radiofrequency. Electromagnetic radiation itself includes radio waves, microwaves, infrared, visible light, ultraviolet light, X-rays, and gamma rays. Radiofrequency is the electromagnetic spectrum with the lowest frequency range (the longest wavelength) in electromagnetic radiation. It is also called a radio wave, and in English, it is radiofrequency or RF for short.
The principle of radiofrequency is similar to the heating principle of a microwave oven. Electromagnetic waves with a frequency of 40 megahertz (MHz) (40 million times per second) penetrate the epidermis to reach the dermis and adipose tissue. Using the impedance of the skin, it makes the molecules of cells resonate strongly and generates heat energy, heating collagen tissue and fat cells. When the thermal energy of the dermis tissue reaches 60°C, collagen fibers contract immediately, and more new collagen proteins are secreted to fill the gaps caused by shrinking and losing collagen proteins.
As the collagen proteins in the dermis layer continue to grow and rearrange, the soft support structure of the skin is formed, wrinkles are filled, and sagging skin becomes plump, firm, and elastic. The collagen proteins in the dermis layer will gradually increase and reorganize, and the therapeutic effect will generally become evident 2-6 months after treatment. Therefore, radiofrequency mainly treats skin sagging, wrinkles, eye bags, improves cellulite, and other relatively deep skin problems. For shallow skin problems, other treatments should be used. Many people ask, can’t lasers improve deep skin problems? In fact, lasers are absorbed and dispersed by the surface skin, which narrows the effective range. Lasers cannot improve deeper skin problems.
The next part will discuss the classification of radiofrequency.