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On the market thousands, tens of thousands, or even hundreds of thousands, millions of hair removal equipment is innumerable, so that several beauty institutions operators pick a blur, in general, many people will go for the well-known brands when buying, but, in addition to the brand effect, as long as a good grasp of several selection factors can also easily buy the most cost-effective equipment. Just like cell phones can look at runtime, memory, and other parameters to determine the merits, hair removal equipment can also be simply judged by various parameters.
The wavelength of the clinically applied hair removal equipment is mostly located between 694-1200m, which can be well absorbed by the melanin in the hair follicle and at the same time can ensure its penetration to the depth of the hair follicle. The most clinically applied ones are semiconductor laser (wavelength 800-810nm), long pulse Nd: YAG laser (wavelength 1064nm), and various intense pulsed light (wavelength between 570-1200mm). In terms of efficacy comparison, the efficacy of the semiconductor laser and various intense pulsed light is close to each other, and the efficacy of the long-pulsed Nd: YAG laser may be slightly worse than that of the semiconductor laser and intense pulsed light for the same number of treatments. The ideal pulse width range for laser hair removal is 10-100ms or even longer. The long pulse width can make the hair follicle and the bulge containing the hair follicle stem cells slowly heated and destroyed, and at the same time can avoid the epidermis from being damaged due to sudden heating after absorbing light energy.
Energy density is an important indicator of the effectiveness of hair removal. The higher the energy density, the more effective the hair removal and the longer the effect, however, high energy is more destructive to the hair follicles and more likely to cause adverse skin reactions and also more painful. The energy density of professional hair removal equipment is 10-60J/cm². Insufficient energy density only causes slight damage to the hair follicle and the hair goes from regression to resting phase, resulting in temporary growth delay, but not permanent hair removal. Clinical results show that increasing the energy density (60-80J/cm²) and increasing the pulse width (50ms) can effectively improve the clinical efficacy of hair removal.
Laser hair removal devices with cooling devices can protect the skin epidermis more effectively, allowing the device to safely use a higher energy density for treatment, and the patient will feel more comfortable and better adapted to the treatment process.
The larger the lamp head area, the larger the light output area, which is easier and faster to use and can greatly shorten the treatment time and improve efficiency.
The key component of hair removal equipment is the laser, high power, large spot, stable performance is the fundamental guarantee of efficacy, inferior laser energy output can not reach the conditions of burning hair follicles, this hair removal equipment is equivalent to scrap, after all, one of the signs of the profitability of hair removal project is the laser of the instrument to work continuously. The service life of the laser is the key factor, after all, each hair removal process laser outputs hundreds of thousands of light spot numbers, the current market common laser output spot number mostly stays within 100,000 hair, when you run out of 100,000 hair, your hair removal equipment will not be able to output energy shutdown or output energy is very low, even the skin heat sensation can not be produced, hair removal effect can be imagined.
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