1.What hair removal methods are there at present?
The current hair removal methods are roughly divided into two categories: temporary hair removal methods and permanent hair removal methods. Temporary hair removal methods mainly include culling method, plucking method and chemical hair removal method. The culling method is a treatment that uses a blade to directly remove the hair; the plucking method is a method that directly removes the hair; and the chemical hair removal method is the removal of hair through chemicals such as hair removal creams and depilatory creams. These methods are simple and not expensive, but they will stimulate the hair to grow faster and grow out longer, thicker and darker.
Long-term hair removal methods are known as permanent hair removal methods in China, and the main methods of this hair removal are photonic hair removal and laser hair removal.
Laser and photon hair removal is a technology that uses laser or intense pulsed light source to instantly irradiate the hair area, destroying and damaging the hair follicle to achieve long-lasting hair removal. Laser hair removal technology emerged 20 years ago and continues to evolve, and is currently the most advanced method of long-lasting hair removal.
There is no essential difference between laser and photon hair removal, their principles, treatment process and aftercare are basically the same, and both have ideal hair removal results. The difference is that photon hair removal uses a broad-spectrum light with a wide range of adjustable pulse width, which has a rejuvenating effect on the skin at the same time as hair removal. However, some patients have adverse reactions such as pain and local erythema, which can easily lead to fear during the first treatment, and then give up the treatment or request to reduce the treatment area. While using laser for hair removal, patients reflect little pain, only mild burning sensation, no serious local skin redness and other adverse reactions after surgery, which is more acceptable than using photon hair removal. Moonlight vacuum hair removal is safer and faster.
2.What is the principle of laser and photon hair removal?
Apply the principle of selective photothermolysis, using the absorption of melanin cells in the hair follicle to specific wavelengths of light to cause the hair follicle to produce heat, to achieve the effect of getting rid of hair while avoiding damage to the surrounding tissue. The hair follicle contains a large number of melanin cells, laser hair removal that is selected for the light energy that is particularly sensitive to the melanin cells of the hair follicle, but no damage to the normal epidermis for irradiation, the hair shaft and the melanin in the hair follicle absorbed into heat energy, so that the temperature of the hair follicle increases, the hair loses its ability to regenerate, to achieve the purpose of hair removal.
3.Why does laser and photon hair removal require multiple treatments?
There are three stages of hair growth: anagen phase (4 weeks to 3 months), stationary phase (3 weeks to 3 months), and regression phase (about 3 months), the hair growth phase varies in each part, but only when the hair follicle is in the anagen phase there is a large amount of melanin in the hair follicle to absorb a large amount of light energy, so the laser or photon has a strong role in removing the hair in the anagen phase, while the regression phase and The hair in the regression and stationary phase has relatively little pigment, so the treatment effect of laser or photon is relatively weak. For this part of the hair need to wait until they slowly transform to the anagen phase before laser removal, so laser hair removal can not be successful at once, usually need several consecutive laser irradiation to achieve the desired effect. In addition, the regeneration ability of hair follicle is very strong, one laser irradiation can only make the hair follicle growth temporary stop or normal function seriously weakened, but not completely destroy the hair follicle, if the treatment interval is too long, the hair follicle will have enough time to restore its growth function, this is also the reason why hair removal needs to be carried out several times, to achieve the ideal treatment effect need to make the multiple laser treatment effect cumulative to the hair follicle, and finally make the hair follicle The hair follicles are completely and totally destroyed or atrophied and lose their growth function.
4.Does laser and photon hair removal have any harm to my body?
Laser and photon hair removal is very safe and its safety is more reliable than hair removal cream. First of all, laser and photon hair removal treatment will not produce allergic reaction. Many hair removal creams tend to make the skin allergic due to the chemical drugs they contain, and they have certain irritation, once the skin has an allergic reaction, it can lead to skin pigmentation abnormalities and affect the beauty. The human skin is a relatively light-transmitting structure, in front of the powerful laser, the skin is simply a transparent paper, the powerful laser can smoothly penetrate the skin deep into the hair follicle. And because the hair follicle has a lot of melanin, it can preferentially absorb a large amount of specific wavelength laser energy, and eventually convert it into heat energy, so that the temperature of the hair follicle rises, and achieve the purpose of destroying the function of the hair follicle. In this process, the skin itself is not damaged because the skin does not absorb laser energy relatively, or absorbs very little laser energy. In addition, the laser has a cooling device on the treatment head that protects the skin and ensures that no skin damage occurs. Some of the hair follicles and sweat glands are the same outlet, and only the melanin in the follicles absorbs the light energy during the treatment, while there is no heat-absorbing pigment in the sweat glands, so the laser does not affect the sweat glands. The shrunken hair follicles will be discharged with the body’s metabolism after the treatment and will not block the sweat glands.
5.Who are not suitable for laser and photon hair removal?
Because laser and photon hair removal use the specific absorption of laser by the pigment in the hair follicle to carry out the treatment, so people with dark skin texture may also absorb part of the laser energy during the treatment, which will produce some damage to the skin, so the laser is especially suitable for people with fair skin and dark hair. If the skin is dark, or if the skin color is dark and the hair color is light, the treatment effect will be affected. In other words, people with particularly dark skin color are not suitable for laser hair removal treatment. However, for yellow people, there are generally no such problems. People who have purposely done sun exposure are not recommended to do hair removal treatment until their skin has regained its original color.
6.What is the effect of hair removal treatment? What factors are involved?
Individual differences in patients greatly affect the effectiveness of the treatment. It is shown that different people have different hair growth ability. In addition, the skin color and the color of the hair also have obvious differences, the effect of treatment will also be different, different parts of the hair follicle to laser treatment reactivity will also be different, such as facial hair compared to the armpit hair, removal is more difficult. And the thickness of the hair also has a very big impact on the treatment effect. In terms of equipment, there are some differences in the safety of the treatment with different treatment equipment, and the light source of the laser will have a great impact on the treatment effect, such as the treatment effect of the laser is definitely better than the effect of bright light. Of course, the doctor’s experience is also very important, experienced doctors can accurately grasp the indications and contraindications of treatment, can timely adjust the treatment and solve or avoid other problems that may occur.
7.Can laser hair removal achieve the purpose of permanent hair removal?
A hair removal method is a permanent hair removal method if there is no obvious hair growth for a considerable period of time after the course of treatment (5-8 times). Laser hair removal and photon hair removal both belong to this type of treatment. Specifically, the effectiveness of the treatment is determined by the number of treatments, the time between treatments, the amount of energy used during the treatment, the individual differences in the person receiving the treatment, and many other aspects. Generally speaking, the more the number of treatments, the more likely it is to achieve permanent hair removal, so the effect of permanent hair removal is relative rather than absolute. To achieve the purpose of hair removal, a course of 6 treatments is necessary, and the treatment should be carried out in strict accordance with the interval prescribed by the physician, and the treatment time should not be too long apart, otherwise the treatment effect will be directly affected. Of course, there are individual hair follicles powerful, although after a course of strict treatment, there are still a few hair growth, can increase the number of treatment to improve the treatment effect.
8.What should I pay attention to after hair removal treatment?
Do not carry out any hair removal treatment (hair removal cream, plucking, etc.) one month before treatment, otherwise it will affect the effect of laser and photon hair removal. Don’t wash the treatment area with too hot water within two days after hair removal, and pay proper attention to sun protection. Of course, depending on the specific situation, the doctor may also have other requirements.
9.Does laser and photo hair removal affect normal work?
There may be slight redness and swelling of the skin after laser hair removal treatment, which will be manifested as short-term mild redness or edema and will disappear completely soon. The redness and swelling may be longer than that of laser hair removal, but in general, laser and photon hair removal will not affect normal work.
10.What season is the best season for hair removal?
Season has almost no influence on hair removal treatment, any season can be treated, but autumn and winter are more suitable. Firstly, you don’t need to deliberately protect yourself from the sun; secondly, after the course of treatment, the whole course of treatment is basically finished by summer. Of course, it is perfectly fine to start treatment in summer.
11.Can any part of the hair be removed by laser or photon?
The answer is yes, any part of the excess hair can be removed by laser and photon. However, there are certain differences in the biological behavior of different parts of the hair, and the reactivity to laser and photon treatment is also different, so the effect of treatment will be different, mainly in the number of treatments.