[Girls must know about hair removal] Experts point out the most efficient golden combination of laser-Beijing Zhenhuimei Beauty Equipment Co., Ltd.

Regardless of whether it is summer or not, fighting with the hair on the body has always been the main point of grooming for many girls. Laser seems to be an inevitable choice for the new generation of hair removal. Maybe you will give it a try for a beautiful spokesperson, or be disappointed by the "permanent" that the business claims. Why is the effect not as expected? Why does "permanence" have to be stripped off endlessly? The editor below provides you with a must-know golden combination for choosing .

The "permanent" fallacy

According to Dr. Zhou Weigang, Master of Clinical Dermatology, University of London, UK, according to the definition of the US Food and Drug Administration, permanent" hair removal refers to "effective and stable reduction of hair regrowth within 4 to 12 months after the completion of the course of treatment". How exactly does laser remove hair for us? Is it really possible to achieve a "permanent" effect?

Researchers pointed out that since melanin can absorb laser energy, the energy will be converted into heat energy to destroy the hair follicles, so that the hair follicles will no longer produce hair, thus achieving the effect of hair removal. What everyone needs to understand is that since the first step of hair removal is for melanin to absorb energy, the corresponding effect can be achieved only when the hair follicles have the most melanin in the hair growth phase, but it is impossible for all hairs to be in the growth phase at the same time, so "One-time permanent hair removal" is impossible. Dr. Zhou believes that 5-6 times should have a "permanent" effect.

Choose IPL or laser

From time to time, we see complaints about injuries or side effects from using lasers or IPLs in the news. Many consumers should be aware of the dangers of improper use. However, Dr. Zhou specially reminded that the occurrence of adverse side effects will also be due to their own reasons. "Sun exposure before treatment and light treatment while taking acne medicines such as vitamin A acid may cause side effects." In addition to burns, potential side effects include pigmentation or loss. Therefore, before receiving treatment, it is very important to inform the doctor of your physical condition to reduce the occurrence of side effects.

Every girl regards optical hair removal as fashionable, but should I choose IPL or laser? The researchers explained the difference between the two: "There is a difference in the energy emitted by the colored light and the laser. The energy emitted by the light is high-intensity and concentrated. It is more difficult to control, it can only delay hair growth and make the new hair younger, and the hair removal effect is not permanent." How to choose depends on individual needs, because the irritation of colored light is relatively low, and it is suitable for people with too fair skin , the energy of the laser is too strong. For the general yellow race, laser is the most effective choice.

Most efficient combination

The researchers further pointed out that there are three key points that must be asked when choosing the most efficient laser treatment: wavelength, pulse and size of the handpiece. The main laser wavelengths currently used are 1064nm, 810nm and 755nm. Studies have found that 755nm is the most effective for Asians. In addition, the thinner the pulse, the greater the energy and the faster the treatment process. The shortest and most advanced pulse of the current laser equipment is 0.25ms, which is 12 times faster than the general 3ms. There is also medical evidence showing that the larger the machine head, the more energy can penetrate into the hair follicles and improve absorption. The last thing that cannot be ignored is the coldfreezing method. Using ice packs or freezing gels will lower the temperature of the hair follicles, weakening the effect of the laser and increasing the number of treatment sessions. It will be the best choice to use the built-in skin freezing system in the machine head.