What is laser fractional rejuvenation
Today, so many different equipment for laser cosmetic and medical procedures have been created that it is not easy for even specialists to understand all the nuances of its work. And if you add to this the incredible volume of various laser techniques, it becomes obvious that it takes more than one year of professional work to master all the procedures.
How laser devices differ in cosmetology
In fact, the consumer of beauty salon procedures does not really care what is the source of photons in the laser device, what method is used to pump them and what is the working body of the laser. It is important for the client to understand the main thing - how this or that type of rays affects his skin. In fact, the action of any laser is to instantly heat certain structures to a high temperature.
And which structures will be most heated by a certain type of laser depends on the wavelength of its radiation, because this is what determines its absorption by certain molecules.
Today, devices have been created that emit in the wavelength range from 400 to 10600 nm with a step from 5 to 100 nm. In addition to the wavelength, such parameters of the beam as the pulse duration and its energy density are also important. The total cosmetic effect of the procedure depends on these parameters, which can be expressed in the evaporation (ablation) of tissues, coagulation of proteins or heating of cells. In some cases, as when using a CO2 laser (carbon dioxide), the effect can be combined. All these effects one way or another lead to:
- improving the appearance of the skin;
- stimulation of metabolic processes;
- production of elastic skin fibers;
- elimination of scars and pigmented areas;
- smoothing wrinkles and so on.
However, due to the different depth of exposure to the skin of different laser beams, these effects manifest themselves in different ways and persist for different periods of time.
Lasers emitting in the range of up to 800 nm are not used for rejuvenation procedures, since such radiation is best absorbed by skin chromophores, primarily melanin. Therefore, the main purpose of such devices is to eliminate various pigmented skin formations - freckles, moles, hemangiomas, spider veins, tattoo, and so on.
The price of devices for fractional laser rejuvenation is quite high, so we can hardly talk about purchasing them for use at home.
The rejuvenating effect of long-wave laser beams differs in two parameters, the combination of which gives a total of 4 different methods of rejuvenation. So, you can act on the skin with a laser spot, that is, with a whole beam. The effect on the skin is continuous. This method is considered classic. Another technique involves cutting the laser beam into fractions, that is, dividing it into several tens of individual thin beams with a diameter of 100-250 microns. This technique is called fractional laser rejuvenation. Unlike the classical technique, the effect of such rays can extend to the entire depth of the dermis, and the undamaged fate is interspersed here with coagulated ones, which creates an additional lifting effect.
The second basic feature that distinguishes lasers for rejuvenation is the mechanism of action on the skin. First of all, there are two main types of exposure - ablation and coagulation. According to this criterion, all lasers in cosmetology can be divided into ablative (ablative) and non-ablative (non-ablative). Ablative lasers work by evaporating water along with skin cells, which is essentially dermabrasion.
This group of lasers includes primarily erbium or cold laser with a wavelength of 2940 nm, carbon dioxide (10600 nm) and Er, Cr: YSGG lasers (2790 nm).
There are many more non-ablative lasers. This group includes lasers "on glass", diode, fiber lasers, neodymium lasers operate according to the same principle. Target tissues for their action are mainly protein molecules of skin cells - hemoglobin, collagen, elastin. Under the influence of non-ablative lasers, they coagulate and heat nearby cells, which leads either to the death of non-viable or to active division of living skin cells.
Thus, laser rejuvenation can be classic ablative or non-ablative, or fractional ablative / non-ablative.
Fractional Laser Rejuvenation Technique
The technique of rejuvenation using a fractionated beam of a cold ablative laser is also called fractional drilling (that is, drilling). It is mainly produced using the fotona erbium fractional scanner. Under its action, "ablation columns" are formed to a depth of 24 microns at a minimum beam power up to 1. 2 mm at a maximum. The ablation column is, in fact, a column of void or a hole in the skin with a diameter of about 100 microns, while the damage to the skin should not exceed 20% of the total area of the treated surface. These columns close within 2-3 days without scarring, which provides a quick and effective facelift.
Fractional laser rejuvenation cannot be performed on your own, without the participation of a qualified specialist.
The cold fractional ablation procedure is of great importance in the treatment of post-acne and other types of scar tissue, since it can significantly reduce the area of formations in one session with a minimum rehabilitation period.
Non-ablative laser rejuvenation is performed mainly with the use of a neodymium laser. The fractional technique of this rejuvenation is called clear lift. During its implementation, no visible damage to the skin occurs, but coagulation photothermolysis takes place. When treated with this laser, coagulum columns are also formed in the skin at a depth of 1. 5 mm, with an approximate density of 1000 pieces per square centimeter of skin.
This procedure is used to affect any areas of the skin that require correction, including the skin of the hands, the sensitive skin around the eyes, as well as to eliminate stretch marks after losing weight. Indications and contraindications for fractional laser rejuvenation are similar to those that apply to other types of laser procedures.