GentleLase Pro is a medical laser hair removal device for long-term hair removal by laser irradiation, developed and manufactured by Syneron Candela in the United States.
It is said that it is less irritating to the skin and is easy to receive treatment even for sensitive skin such as atopic dermatitis. In addition to the hair removal effect, it can also be expected to have the effect of improving skin problems caused by melanin pigments such as dullness and light spots.
You can choose the medical laser hair removal device that suits you by comparing the medical laser hair removal devices that can be expected to be effective in addition to Gentle Raise Pro and checking the difference in the obtained effects and the advantages and disadvantages .
Table of contents
A laser is a type of light. The light energy used in a laser has the property of a waveform that repeats peaks and valleys. The distance between mountains or valleys is called wavelength . Wavelengths are expressed in units of nanometers (nm), which is one billionth of a meter, and light energy has multiple wavelengths .
A laser has the characteristic that it travels sharper and in a straight line than light by artificially extracting and amplifying one wavelength from various wavelengths of light . There are many wavelengths of light that can be extracted, and substances such as gas, solid, liquid, and semiconductor are used when extracting a laser from the wavelength of light. These are called "laser media", and each laser extracted by the laser medium has a name.
For example, the laser medium used for hair removal is a crystal or semiconductor in which neodymium (Nd) is added to a garnet (G) structure crystal (YAG) consisting of alexandrite, a composite oxide of yttrium (Y) and aluminum (A). Based on the laser medium, it is called "Alexandrite laser", "NdːYAG laser", "Semiconductor (diode) laser", etc.
In addition, the laser is by the length of the wavelength, have a that is easily absorbed characteristics (melanin pigment and water is a dye to make hemoglobin is a red red blood pigment, the color of the skin, hair, eyes) skin of substance, wavelength The substances of the skin that are easily absorbed differ depending on the length of the skin .
Thermal energy is generated when wavelengths are absorbed by substances in the skin . It is the same phenomenon that you feel warm when sunlight hits your skin. If the wavelength is short, it is absorbed by substances on the surface of the skin, and if it is long, it is absorbed by substances in the back of the skin, and heat energy can be expected to improve skin problems such as hair removal effects, spots, acne scars, pore openings, and reddish faces. Therefore, the appropriate wavelength length is selected for hair and skin problems.
|Main types of laser||wavelength||Absorbed skin substances|
|Die laser||Around 585nm-595nm||〇||〇|
|Diode laser||Around 810nm to 1450nm||△||〇 at 1450nm|
|Nd: YAG (neodymium yag) laser||1064nm||△||〇|
|Er: YAG laser||2940nm||◎|
|Carbon dioxide laser||10600nm||◎|
It is important to set the irradiation time (pulse width) per shot of the laser when using the laser to improve the hair removal effect, spots, acne scars, pore openings, and skin problems such as redness.
The unit of pulse width is millisecond (ms), microsecond (μs), nanosecond (ns), picosecond (ps) in descending order, and the laser used in aesthetic medicine is called "long pulse laser". A laser with a pulse width of millisecond units, a laser with a pulse width of microseconds called "normal pulse laser", a laser with a pulse width of nanoseconds called "Q switch laser", and a pulse width called "pico laser" There are picosecond lasers.
When the pulse width is in picoseconds, the object is crushed by the shock wave of laser irradiation, so it is said that the heat does not affect the surrounding tissues and the risk of burns and post-inflammatory hyperpigmentation is low, which is longer than nanoseconds. In that case, the heat energy generated by laser irradiation destroys the target , and the heat energy may reach the surrounding tissues.
Therefore, the longer the pulse width, the more heat spreads to the surrounding tissues, and normal skin cells that do not want to exert heat may also be damaged.
Recently, there have been great developments in attempts to destroy hair follicles and use them for hair loss treatment by using ruby lasers, alexandrite lasers, and semiconductor lasers, which have relatively long wavelengths, as long pulses.
The laser used in Gentle Raise Pro is a long-pulse laser that uses an alexandrite laser medium and is called an alexandrite laser. Medical laser hair removal has a hair removal effect by absorbing the laser with the melanin pigment of the hair (hair shaft) coming out of the skin and the hair (hair root) inside the skin to generate heat energy.
The wavelength of the laser that can obtain the hair removal effect is said to be 600 nm to 1200 nm, and it is said that the shorter the wavelength, the easier it is to be absorbed by the melanin pigment.
The long pulse alexandrite laser is a 755 nm laser, which is the shortest wavelength of the lasers that are said to have a hair removal effect. Therefore, laser light with a wavelength of 755 nm has the characteristic of being easily absorbed by reacting with the melanin pigment in the hair shaft and hair root .
Thermal energy is generated when the alexandrite laser is absorbed by the melanin pigment in the hair shaft and root. By irradiating with a long pulse, not only the hair shaft and hair root but also the "hair follicle" that surrounds the hair, the "hair bulb" that the bottom part of the hair root bulges spherically, and the "hair" that takes in the nutrients carried by the capillaries. It is said that the hair follicles can be destroyed and hair can be removed because the heat energy reaches the "hair follicle", which receives nutrients from the hair follicles and repeats cell division to push up the cells one after another to grow hair.
There are two types of medical laser hair removal: heat destruction type (shot type) and heat storage type . In some medical institutions that handle medical laser hair removal, the heat-destroying type is described as HR (Hair Removable) type hair removal, and the heat storage type is described as SHR (Super Hair Removable) type hair removal.
The heat storage type continuously irradiates a low-power laser to gradually store heat around the hair follicles . The stored heat stimulates the bulge region, dermal papilla, and hair matrix cells, which are the organs that generate hair, and gradually destroys them, leading to hair loss . The thermal destruction type irradiates a high-power laser in a single shot and instantly delivers heat to the depths of the hair root, destroying hair follicles, hair bulbs, dermal papilla, and hair matrix cells .
Gentle Raise Pro is heat-destroying. A handpiece is placed on the part to be depilated and a long pulse alexandrite laser that generates strong heat energy is irradiated, and each irradiation is performed while moving on the skin little by little.
By irradiating with a long pulse alexandrite laser, it is absorbed by the melanin pigment of the hair shaft and hair root, and heat is generated to instantly destroy the hair follicles, hair bulbs, hair papillae, and hair matrix cells. The dermal papilla has a role of supplying nutrients to the hair matrix cells that promote hair growth, and destroying these causes new hair to be unable to grow .
It takes time to irradiate each hair with a heat-destroying laser when removing hair over a wide area.
However, Gentle Raise Pro has large handpieces from 20mm to 24mm in addition to standard handpieces with a spot size (diameter of the laser range emitted by a single irradiation) of 6mm to 18mm.
The large size handpiece can irradiate a wide range at once, and the laser irradiation speed can also irradiate twice per second. Therefore, it is said that hair removal can be performed in a short time of about 5 to 10 minutes per site .
The long pulse alexandrite laser is said to work well on normal to dark hair because it is easily absorbed by melanin pigments. On the other hand, it is said that it takes time for the hair removal effect to appear because it is difficult to react to hair with thin melanin pigment such as downy hair and thin hair .
Human skin is layered from the outside with the epidermis layer and dermis layer. In particular, about 70% of the dermis layer is "collagen," which is a fibrous protein, and "hyaluronic acid," which is a jelly-like substance that holds water, fills the space between them. In addition, elastic fibrous protein called "elastin" binds collagen to each other, and this collagen, elastin, and hyaluronic acid give the skin firmness and elasticity .
The heat energy of the long-pulse alexandrite laser reaches the dermis layer, which stimulates fibroblasts that produce collagen, elastin, hyaluronic acid, etc., which are responsible for the firmness and elasticity of the skin. It is said that the stimulation of fibroblasts activates the production of collagen, elastin, and hyaluronic acid , which increases the elasticity, moisture, and firmness of the skin .
When irradiated with a long-pulse alexandrite laser , the laser light is absorbed by the melanin pigment , which causes light spots, freckles, and darkening, and converted into heat energy . The converted heat energy destroys the melanin pigment , leading to improvement of light spots, freckles, and darkening .
Gentle Raise Pro generates heat energy by absorbing laser light into the hair shafts and roots. It is said that by burning hair shafts and hair roots at high temperature in an instant with heat energy, heat energy is also transmitted to the tissues (hair follicles) around the hair, and the sebaceous glands that cause acne inflammation are destroyed by heat energy. I will.
P. acnes, the cause of acne, grows by feeding on the sebum excreted from the sebaceous glands, so if the sebaceous glands are destroyed, it will not grow . As a result, it is said that it can be expected to improve acne .
Hair has a cycle called the "hair cycle" from growth to shedding . The hair cycle has four phases: early growth, growth phase, regression phase, and telogen phase, and the growth phase is the most suitable timing for undergoing medical laser hair removal .
* Early growth: The time when the hair matrix cells that produce hair divide and make hair bulbs * Growth phase: The time when hair bulbs grow and the hair grows out of the skin and can be seen * Degeneration phase: Hair growth stops season. Gradually separated and the cell division of hair matrix cells stopped. The hair follicles contract and the hair is pushed out.
* Telogen: The period when the hair is completely separated from the dermal papilla and the hair comes off. The remaining dermal papilla falls into a state of rest until the next growth period.
Not all hair cycles are the same, so if you are going to have a Gentle Raise Pro hair removal procedure, you will need to do it multiple times. Therefore, there are individual differences in the treatment site, skin quality, hair quality, etc., but in many cases, you can feel the hair removal effect to the extent that the burden of self-treatment is lightened by undergoing treatment about 5 times every 2 months. It is said that.
|Part||Rest period||Regression period||Hair cycle|
|eyebrows||About 3 months||About 1 to 2 weeks||About 10 months|
|beard||About 10 weeks||About 2 to 3 weeks||About 14 months|
|Under the nose||About 6 weeks||About 2 to 3 weeks||About 5 months|
|Armpit hair||About 3 weeks||About 2 to 3 weeks||About 5 months|
|VIO||About 3 months||About 2 to 3 weeks||About 8 months|
|arm||About 16 weeks||About 2 to 3 weeks||About 10 months|
|leg||About 24 weeks||About 3 to 6 weeks||About 11 to 12 months|
* Because the hormone balance is involved, there are individual differences in the hair cycle.
When Gentle Raise Pro is applied to thick hair areas such as the sides and knees, it is said that the hair will begin to fall out within about 2 weeks after the treatment , although there are individual differences in the time it takes to feel the hair removal effect.
On the other hand, it is said that laser light is not easily absorbed in the areas where fine hair grows, such as the downy hair and shoulders of the face, because the melanin pigment content of the hair is low, and it is slow to realize the effect .
Prices for Gentle Raise Pro treatments vary depending on gender and site . Gentle Raise Pro's medical laser hair removal is not covered by insurance and you will be responsible for all costs.
|Part||Price per part|
| S parts|
(Waki, V line, V bottom, V top, knee, back of hand, fingers, instep, toes, upper lip, lower lip, chin, forehead, etc.)
|About 1,500 yen to 6,500 yen|
| M parts|
(Around I line, inside I line, around O line, below knee, below elbow, above elbow, around areola, neck, nape, eyebrows, etc.)
|About 4,500 yen to 18,000 yen|
| L parts|
(V full processing, above knees, back, chest, abdomen, waist, hips, entire face, etc.)
|About 9,000 yen to 20,000 yen|
|Whole body||About 30,000 to 40,000 yen|
|VIO||About 9,000 yen to 15,000 yen|
|Part||Price per part|
| S parts|
(Waki, knees, fingers, back of hands, toes, instep, forehead, V line, lower V, upper V, etc.)
|About 3,600 yen to 6,000 yen|
| M parts|
(Under the knee, below the elbow, above the elbow, areola, eyebrows, neck, nape, beard nose, chin tip, cheeks, sideburns, back of the chin, etc.)
|About 9,600 yen to 12,000 yen|
| L parts|
(On the knees, back, chest, abdomen, waist, hips, V full treatment, etc.)
|About 15,000 to 20,000 yen|
|Whole body||About 70,000 to 80,000 yen|
|VIO||About 18,000 to 25,000 yen|
* The method of dividing each part into S parts, M parts, and L parts differs depending on each medical institution.
* The above rates are calculated by calculating the rates of medical institutions that use Gentle Raise Pro to remove hair. Please contact the medical institution for detailed charges.
Medical hair removal for the purpose of beauty is a free medical treatment that is not covered by insurance , but if you need hair removal due to skin disease caused by hair roots , you may be eligible for a "medical expense deduction" . Medical expense deduction is one of the systems called "income deduction" in which income tax is reduced when medical expenses of 100,000 yen or more are paid in one year.
If the doctor determines that "hair removal is effective because it will hurt your body if you do not remove hair", Gentle Raise Pro treatment can be eligible for a medical expense deduction system. Please consult your doctor to see if you can actually get a medical expense deduction system .
Gentle Raise Pro uses Dynamic Cooling Device (DCD), a device that cools the skin before laser irradiation.
DCD is said to reduce the pain felt by the heat generated by irradiating the laser with a coolant sprayed on the skin surface immediately before the laser irradiation . Therefore, it is said that the pain is such that the skin is repelled by a rubber band, and that an adult can tolerate it without anesthesia.
In addition, Gentle Raise Pro's DCD can adjust the injection time of the coolant and also the pulse width, so it is possible to irradiate laser light according to the skin type and hair type of each person. Therefore, it is said that pain can be less likely to be felt by setting the irradiation .
However, you may feel strong pain in areas with thick hair such as the beard and VIO (delicate zone) of men and areas near the bones such as the waist and back . Some medical institutions have introduced epidermal anesthesia and laughing anesthesia, so if you feel uneasy, please consult your doctor in advance.
Gentle Raise Pro reduces the risk of burns by setting the laser output to suit each individual's skin and hair quality, and by using a DCD that cools the skin before irradiating the laser. Therefore, it is said that there is almost no downtime .
However, in rare cases, it may cause excessive pigmentation, depigmentation, erythema, swelling, internal bleeding, scabs, folliculitis, acne, itching, burns, pain, discomfort, and thickening / hardening of the surrounding hair . .. Hair folliculitis, acne, swelling, pain and discomfort are said to subside within a few days . In addition, it is said that depigmentation, pigmentation, scabs, internal bleeding, and erythema will subside in about 1 to 2 weeks in 2 to 3 days .
It is said that if you have a burn, it will heal in about 1 to 2 weeks, but since it may cause post-inflammatory hyperpigmentation, please consult a medical institution immediately .
Do not use tweezers or wax to remove hair during medical laser hair removal, as the laser will not react to the melanin pigment in the hair if there are no hair in the pores . Only shave with a razor or shaver for self-treatment of hair.
Irradiation is not possible when sunburned, as it increases the risk of burns . To prevent sunburn, use sunscreen with SPF 30 or higher, and wear long sleeves and long pants to prevent sunburn.
If sunscreen or cosmetics (including cream and lotion) remain on the area to be depilated , the laser may react with the ingredients and cause burns . Be sure to drop it before irradiation.
Please shave the area to be depilated the day before or on the day before receiving the treatment. If you have leftover shaving, you may not be able to receive the treatment or you may be charged a shaving fee depending on the medical institution .
Wear goggles to protect your eyes from the laser light. If the laser gets into your eyes, it may cause damage such as retinal damage , resulting in poor eyesight or blindness , so be sure not to remove it during irradiation.
Do not scratch the area where the hair removal procedure has been performed. It can cause pigmentation by damaging the skin .
It is said that it is desirable to take a shower instead of taking a bath depending on the treatment site. Follow the instructions from your doctor who has been treated by Gentle Raise Pro.
Burnt hair may not come out of the pores and may remain in the pores. However, do not forcibly pull it out as it will gradually fall out. It is said that it takes about 3 to 4 weeks for burnt hair to come out of the pores, although there are individual differences.
The skin is dry after laser irradiation . Therefore, please moisturize properly.
Do not get sunburned after medical laser hair removal. It is said that laser-irradiated skin is sensitive to ultraviolet rays such as sunlight and is prone to pigmentation . Therefore, apply sunscreen with SPF30 or higher to the treatment area as a measure against UV rays, or use a sun umbrella or cardigan to prevent sunburn .
VIO is a delicate area where the skin is thin. When irradiated with a laser , the shorts may rub against the treated area due to the particularly sensitive skin, causing rough skin, itchiness, and darkening . Therefore, it is recommended to wear natural fiber cotton shorts that are gentle on the skin .
Asians such as Japanese are actively producing melanin pigments that protect the skin from ultraviolet rays, and many melanin pigments are present on the surface of the skin. Therefore, there is a risk of burns when irradiating with a long pulse alexandrite laser that easily reacts with melanin pigment and exerts a thermal effect on surrounding tissues.
However, Gentle Raise Pro uses DCD as a device to cool the skin during laser irradiation. The coolant used in DCD is 1,1,1,2-tetrafluoroethane, a nonflammable gas mainly used in household freezers. By injecting 1,1,1,2-tetrafluoroethane at -26 ° C onto the laser irradiation surface, it is said that the risk of burns due to laser irradiation is low .
The risk of burns is also related to the output of the long pulse alexandrite laser (J / ㎠). J / ㎠ is the density of the energy of the laser emitted per square centimeter. The higher the output, the higher the irradiation energy (fluence) per unit area, and the heat generated after being absorbed by the melanin pigment is high. Will be.
The output of Gentle Raise Pro can be set between 3j / ㎠ and 150j / ㎠. The darker the skin color, the lower the output, and the larger the spot size, the lower the output, which reduces the risk of burns. I'm holding it down .
Gentle Raise Pro has been approved by the Ministry of Health, Labor and Welfare for its safety due to the low frequency of risks such as burns at the treatment site. In addition, the effectiveness of the hair removal effect has been recognized, and it was approved as a medical laser hair removal device in 2016.
Medical hair removal is a medical procedure that destroys hair follicles, hair bulbs, and hair papilla cells with strong energy using medical equipment such as Gentle Raise Pro. Article 17 of the Medical Practitioners Act prohibits anyone other than a nationally qualified doctor or nurse from performing procedures that destroy hair follicles, hair bulbs, and dermal papilla hair matrix cells .
Therefore, esthetic hair removal is hair removal with a weak energy setting called photoepilation (flash hair removal / IPL hair removal) that does not destroy hair follicles, hair bulbs, and hair matrix cells . Since the treatment is performed in a setting with low energy, the number of treatments is larger than that of medical laser hair removal.
In addition, since esthetic hair removal is performed by people other than nationally qualified doctors and nurses, it is not possible to diagnose the skin and hair quality of each person, and even if weak energy is used, there is a high risk of burns. Become.
In the unlikely event that there is a problem such as a burn due to medical laser hair removal, a doctor will immediately examine and treat you, but esthetic hair removal will not be immediately examined and treated and you will have to go to a medical institution yourself.
For this reason, the information on the hazards of hair loss sent to the National Consumer Affairs Center of Japan is greater for esthetic hair removal than for hair removal at medical institutions.
|Medical Hair Removal (Gentle Raise Pro)||Esthetic hair removal|
|effect||Stop hair growth by destroying hair matrix cells||Damages hair matrix cells and delays hair growth|
|Hair removal practitioner||Nationally qualified doctors and nurses||No qualification required. Esthetician etc.|
|Number of hair loss||In many cases, you will realize a satisfactory effect by receiving the treatment about every two months about five times.||In many cases, you will feel a satisfactory effect by receiving the treatment about every 2 months 12 to 18 times.|
|Response in case of trouble||Medical examination and treatment by a doctor is possible on the spot||You have to go to a medical institution yourself|
[Case 4] I suffered a burn due to photo-epilation around the anus, and at an esthetic salon that had undergone several treatments, which was said to take more than a year to heal completely, I had photo-epilation of the whole body and delicate zone. When the clerk radiated light around the anus, severe pain ran. I complained of pain, but it was said that the pain was more effective, so I continued the procedure. It hurt when I walked, so I checked it in the mirror and found that the upper part of my anus was burned and my skin was slippery. When I offered it to the beauty treatment salon, I was told, "I want you to go to the hospital because I will accompany you, refund the treatment fee, and pay the treatment fee." When I was examined, a causal relationship with photoepilation was found, and it took a long time to dry, so it may take more than a year to completely heal, and it was said that even if the keloid constitution is healed, it will continue.
As you may already know from newspapers and television reports, on April 8, 2014, the owner of an esthetic salon in Himeji was arrested for performing "photoepilation" on an employee without a medical license. happened. It was triggered by a customer getting burned.
Source: -About esthetic hair removal-
There are three main types of lasers used for medical hair removal.
The longer the wavelength of the laser, the deeper it reaches the skin, and the skin and hair types that apply to each are different.
|Types of lasers often used in medical hair removal||Laser features||Adapted skin / hair quality|
|NdːYAG Laser||・ Wavelength 1064nm|
・ Energy reaches the subcutaneous tissue ・ Less pain
|・ Downy hair, thinned hair, dark skin|
|Diode laser||・ Wavelength 810nm-940nm|
・ There are heat storage type and heat destruction type. ・ There is less pain.
|・ Regardless of hair or skin type ・ Treatment of spots and bruises is also possible|
|Alexandrite laser||・ Wavelength 755nm|
・ It can be expected to improve dullness and age spots. ・ It is said to be compatible with Japanese skin quality.
|・ Normal to dark hair ・ Sensitive skin to normal skin|
Nd: YAG laser is a laser that uses neodymium (Nd), yttrium (Y), aluminum (A), and garnet (G) as the laser catalyst. The wavelength of the Nd: YAG laser is as long as 1064 nm, and it has the characteristic of reaching the subcutaneous tissue that supports the epidermis and dermis layers.
Since the wavelength is long, it can damage the hair roots without reacting with the melanin pigment on the surface of the skin, and it is said that it can irradiate the skin that contains a lot of melanin pigment due to sunburn. In addition, since the wavelength is long, it can be expected to be effective for hair with deep hair roots . In addition, medical laser hair removal equipment that uses Nd: YAG laser is only a heat destruction type, and there is no heat storage type machine.
Diode lasers have a slightly longer wavelength than alexandrite lasers. The wavelength of diode lasers used in medical laser hair removal is mainly 800nm to 810nm. The length of the wavelength varies depending on the model.
It is said that diode lasers can be used on skin with atopic dermatitis because they do not care about skin type or hair type. There are two types of medical laser hair removal equipment that use diode lasers: heat storage type and heat destruction type.
Compared to other lasers, the alexandrite laser has a shorter wavelength of 755 mm, so it is easily absorbed by the melanin pigment in the hair shaft and roots . It is said that the laser is absorbed by the melanin pigment and generates heat energy, which destroys hair follicles, hair bulbs, hair papillae, and hair matrix cells.
In addition to hair removal, it can also be expected to have the effect of tightening pores and improving darkening and dullness of pores. It is also said that the activation of collagen, elastin, and hyaluronic acid increases the elasticity, moisture, and firmness of the skin .
Medical laser hair removal equipment for alexandrite laser includes heat storage type and heat destruction type machines.
1. Counseling / examination
Before the treatment, the doctor checks the condition of the skin and hair of the irradiated area and decides the number of treatments and the laser output. If you are prone to pain, use anesthesia or consult your doctor.
2. Preparation for treatment
Cleanse and wash your face when performing facial treatments, and change into underwear prepared by a medical institution when performing VIO treatments. Also, wear goggles to prevent the laser from getting into your eyes. ..
3. Gentle Raise Pro Irradiation
Irradiate with an appropriate laser output while checking the skin and hair quality of the part you want to irradiate. Depending on the site, the procedure will be completed in about 5 to 10 minutes per site and about 1 hour for whole body irradiation.
4. After the end
After the irradiation is completed, the skin is cooled to soothe redness and hot spots, and then sunscreen is applied to take measures against UV rays. After the treatment is completed, the doctor will explain the precautions after the treatment and the procedure will end. You can make up as usual and go home.
Gentle Raise Pro can adjust the laser output, pulse width, and injection time of the coolant according to each person's skin type and hair type, so it is safe to remove hair even on Japanese skin with abundant melanin pigment production. Is said to be received.
In addition, when removing hair over a wide area, the treatment time can be shortened instead of the standard 6 mm to 18 mm spot size handpiece.
Standard handpieces are included with the purchase of Gentle Raise Pro, but large spot size handpieces must be purchased separately at each medical institution, so medical institutions that do not have large spot size handpieces. There is also.
If you want to remove hair over a wide area, or if there are many areas where you want to remove hair, it is important to have a hair removal treatment at a medical institution that has a large spot size handpiece . Please contact your medical institution in advance if you have a large spot size handpiece.
(Updated January 2021)