The laser hair removal technology used at Aesthetica Medical Centre, Lumenis Lightsheer and Alma Laser, as the best permanent hair removal technology, is proven by over 70 clinical studies and patient experience. However, to understand the reasons behind the success of laser hair removal, it is important to understand the mechanism of laser hair removal treatments.
Why is diode laser hair removal so special and effective? How does laser energy affect the hair follicle? To get the answers to these questions, learn about hair structure, the hair growth cycle and the exact effects of laser hair removal on hair!
Now you can learn from an authoritative source about the reasons behind the results of laser hair removal, and also make sure that laser hair removal is the safest and most effective hair removal procedure, backed up by clinical studies and the biological characteristics of the hair.
The skin consists of three main layers:
The structure of the hair is as complex as the layers of the skin, but it also gives us an understanding of how laser hair removal works.
The pointed hair, the visible part of the hair, ends in the hair follicle, which is also made up of several parts.
The dermal papilla is located in the lower part of the hair follicle and plays a fundamental role in the morphogenesis (development) of the hair follicle, where the nourishing blood vessels run into and around it are the matrix cells, which are responsible for cell division and the growth of new hair.
The hair bulge region is the storage area for follicular stem cells, this area is located above the hair follicle, at the origin of the hair shaft muscle. The hair in the follicle region is pigmented, i.e. it acquires its final colour, by the melanocyte cells, and this area also helps in the keratinisation of the hairs.
The process of hair 'colouring' is very interesting: melanocytes in the hair follicle transport their pigment to the cells in the medulla and cortex layers of the hair, but as we age, the melanocytes produce less melanin, resulting in less pigmented, grey hairs.
The angle and shape of the hair follicles also determines the shape of the hair, the rounder the hair follicle, the straighter the hair, while curlier hairs result from more oval (kidney-shaped) hair follicles.
When examining the external structure of the hairs, three layers can be distinguished.
The hairs do not grow continuously but in cycles, and hair growth consists of three distinct cycles.
During diode laser hair removal, the laser beams emitted by the laser using 805 nm wavelength energy will be absorbed by the melanin in the hair shaft and conducted to the hair follicle, where the laser energy is converted into heat, thereby destroying the dermal papilla and the surrounding matrix cells. It is important that as many hairs as possible are in an active growth phase during the treatment, as this is when the hair is in constant contact with the hair follicle, allowing the laser energy to be absorbed in the right place, damaging the Matrix cells and permanently preventing hair growth and further cell division.
The reason for multiple laser hair removal treatments is to hit every hair in the active growth phase at least once. Another key factor in laser hair removal is the combination of skin and hair colour. For an effective treatment, the laser beams are absorbed through melanin, the pigment in the hair follicle, but the skin and hair also contain pigment.
The ideal patient has a high hair-skin contrast, i.e. lighter skin and dark hair, as dark hair can absorb a lot of energy, creating drastic damage to the hair follicle, but as the skin is light and therefore contains little melanin, there is no fear of damage to the skin tissue. There are two types of melanin, eumelanin (brown and black) and pheomelanin (red). Only eumelanin can absorb laser beams, so red hair is not suitable for laser hair removal.
Laser hair removal is considered permanent as the hair does not grow back after the full hair growth cycle. Over the years, there may be some internal factors that cause some hair follicles to regenerate, but these can be effectively treated with a single maintenance session.
Permanent hair removal is defined by the FDA in 1998 as "...the long-term, permanent reduction in the amount of hair that grows back after treatment... and not necessarily achieving complete hairlessness of the treatment area".
At our medical centre, we use only laser machines that are rated by the FDA, the US Food and Drug Administration, as having the highest efficacy class available.
However, there are some hormonal disorders (e.g. hirsutism and hypertrichosis) where only temporary improvement can be achieved, requiring maintenance treatments to maintain hairlessness, as the laser does not prevent new hair follicles from forming if there are concomitant endocrine/hormonal disorders. In other words, only cases where there is no underlying medical reason or, if there is, the patient is under continuous medical supervision, can be considered for effective treatment.
The average hair reduction from baseline (3 and 12 months after the last treatment) was 59.7% and 69.2% after diode laser treatments.
Photoepilation by diode laser and IPL (flash light): comparison of the two methods by randomized controlled trials
The IPL device used in the experiment (Ellipse Flex) works with 600-950 nm wavelength light, while the Lumenis XC uses 800 nm wavelength laser energy to eliminate hair growth.
The treatments were carried out on 30 study participants with skin types II-III, with treatments covering the hair under the arms. In the study, 6 treatments were performed with each device at 4-week intervals.
The final evaluation of the results was carried out 12 months after the last treatment. The primary objective of the study was to investigate the reduction in hair growth, but other important aspects of the study included the effectiveness perceived by patients, treatment-related pain, side effects during treatment and the duration of treatment.
Both devices significantly reduced the number of hairs. The average hair reduction from baseline (3 and 12 months after the last treatment) was 59.7% and 69.2% after diode laser treatments, compared to 42.4% and 52.7% after IPL treatments. The diode laser treatments were more painful but could be performed much faster than IPL treatments. No serious side effects were observed with either treatment.
Overall, both diode laser hair removal and IPL treatments are highly effective, provide long-lasting results and are safe. In the research, diode laser hair removal was found to be more effective than IPL hair removal treatments.
Source: https://pubmed.ncbi.nlm.nih.gov/23278132/
A Klein 1, S Steinert, W Baeumler, M Landthaler, P Babilas
Significant hair loss was observed at both the 6 (54%) and 15-month (42%) follow-ups. Remaining hairs were thinner and lighter at the 15-month assessment, with the majority of subjects reporting mild to moderate pain during treatment, all without the use of pre-treatment anaesthesia or skin cooling.
Evaluation of the long-term results of treatments with the LightSheer Duet HS applicator 15 months after the last treatment
The high-pulse diode laser (800-810 nm wavelength) is one of the most commonly used and effective lasers for laser hair removal. Limitations of the devices available at the time of the study included the small size of the treatment head, pain during treatment and the problem of cooling the skin. The aim of this study is to evaluate the long-term hair removal performance of a diode laser with a high pulse, large treatment head and vacuum technology.
The study involved 35 subjects who underwent axillary hair removal by researchers. The treatment series consisted of 3 sessions using a high-pulse diode laser with a large treatment head and vacuum system. Treatments were given at 4-6 week intervals, with results monitored at 6 and 15 months after the last treatment. Changes in hair thickness and colour, the degree of treatment-related pain and side effects during the treatments were additional study criteria.
Significant hair loss was observed at both the 6-month (54%) and 15-month (42%) follow-ups. Remaining hairs were thinner and lighter at the 15-month assessment, and the majority of subjects reported mild to moderate pain during treatment, all without the use of pre-treatment anaesthesia or skin cooling.
Summarizing the results of the study, the laser technology, with its high-pulse, large-head and vacuum system, is safe and effective for long-term hair removal, with comparable efficacy to other laser hair removal devices. However, the size of the handpiece allows for greater efficiency due to the size of the treated area, fewer pulses and faster treatment, and the device can treat a wide spectrum of Fitzpatrick skin types. The built-in vacuum system eliminated the need for anaesthesia prior to treatment, with 39% of patients reporting no (0) or mild (2) pain experienced.
This is the largest study to quantify the reduction in hair thickness and darkness as a result of laser hair removal, in addition to examining the long-term effects of laser hair removal.
Source : http://kungsportskliniken.se/files/lightsheer_duet_studie_2012.pdf
Omar A. Ibrahimi, MD, PHD and Suzanne L. Kilmer, MD
When asked to rate discomfort, 67.8% of participants rated the discomfort of HS handpiece treatments as negligible, slight or moderate. Ten of the eleven participants (91%) who completed the treatment were satisfied with the HS treatment head; 83% said they would continue to treat other parts of the body at their own expense after the study and 87% would recommend the treatment to others.
The results of Lumenis LightSheer Duet HS (high-speed - large handpiece) and ET (conventional, small handpiece) treatments are similar
Low-energy laser hair removal can, in certain circumstances, maintain the effectiveness of high-energy laser treatments while improving comfort during treatments. In this trial, the efficacy, safety and tolerability of laser hair removal in conventional settings were compared with treatments using lower energy, larger treatment heads and vacuum systems.
The trial involved 14 healthy people with Fitzpartick skin types II-IV, and laser hair removal of the armpits was performed with an 800 nm diode laser, 5 times with a 1-month interval between treatments. Controls and results were summarized 1 month and 3 months after the last treatment. Each participant was treated with a 9x9 mm cooled head and gel with an energy output of 25-35 J/cm2 for one axilla (ET handpiece), while the other axilla was treated with a 22x35 mm vacuum-assisted handpiece with an energy output of 12 J/cm2 (HS handpiece). Each session was followed by a check and a summary.
Eleven participants completed the study and participated in the follow-up of the results. All of them experienced significant hair loss in both treated areas, with both the high and low energy treated armpits showing hair loss at the 3-month follow-up. Participants found the lower energy laser treatments to be more tolerable, less uncomfortable and no side effects were experienced during the treatments.
At the end of the treatment, 73% of participants preferred treatments with the HS treatment head over the ET treatment head. In terms of discomfort, 67.8% of participants rated discomfort with the HS handpiece as negligible, minor or moderate compared to 58.1% with the ET handpiece. Ten of the eleven participants who completed treatment (91%) were satisfied with the HS treatment head; 83% said they would continue to treat other parts of the body at their own expense after the study and 87% would recommend the treatment to others.
Overall, both laser hair removal treatments are effective and safe.
Source: https://pubmed.ncbi.nlm.nih.gov/22129205/
Shlomit Halachmi & Moshe Lapidoth
Clinical research has shown that laser treatments can reduce hair density by 10-40% in light-skinned and dark-haired people, the ideal subject, while a single laser hair removal treatment can reduce hair density by 10-40%, while three treatments can reduce hair density by 30-70%, and repeated treatments by up to 90%.
Market overview of lasers and comparison of Nd:YAG alexandrite lasers
The aim of this study was to investigate the clinical and scientific aspects of photoepilation. The results of the clinical research show that laser treatments can reduce hair density by 10-40% in light-skinned and dark-haired subjects, the ideal subject, while a single laser hair removal treatment can reduce hair density by 10-40%, while three treatments can reduce hair density by 30-70%, and repeated treatments by up to 90%. Diffuse and perifollicular redness and pigmentary changes are the most common side effects of treatment, which are only temporary.
When used properly and professionally, photoepilation procedures are clearly more effective than older, traditional hair removal techniques. A growing number of published studies have already demonstrated the safety and short- and long-term efficacy of photo-epilation, but it can also have short-term side effects.
Source: https://pubmed.ncbi.nlm.nih.gov/15204156/
Lepselter and M. Elman
The results were evaluated at least 4 months after the last treatment, with an average of 8 months, using photo documentation. Overall, 59% of subjects had only weak hair growth at the last follow-up.
Laser hair removal with 800 nm wavelength energy is effective and safe
The study involved 50 research subjects treated with a prototype 800 nm diode laser, with treatments at energy densities between 10 and 40 J/cm, with 1 to 4 treatments per study. In the thigh and back study, 38 of 50 subjects (21 women and 17 men) chose to receive a treatment on one area of the body, i.e. the removal of unwanted pigmented hair. The participants were aged between 21 and 60 years, with an average age of 34.6 years. Seventeen patients (45%) had Fitzpatrick type II, 10 (26%) type III, 4 (11%) type IV, 5 (13%) type V and 2 (5%) type VI skin. Results were evaluated at least 4 months after the last treatment, with an average of 8 months, using photo documentation. Overall, 59% of subjects had only weak hair growth at the last follow-up. Thus, higher energy density and repeated treatment resulted in long-term efficacy. Transient pigment changes occurred in 29% of subjects after treatment, typically in subjects with skin types IV-VI, i.e. darker skin types.
Overall, the 800 nm wavelength skin-cooled diode laser is an effective and safe technology for laser hair removal. The 800 nm wavelength penetrates deep into the dermis, where follicular melanin is the dominant chromophore (the molecule responsible for colour). The absorption of laser light by melanin causes localised thermal damage to the hair, epithelium and matrix cells, thus permanently eliminating hair growth. It can be said that the higher wavelength and multiple treatments ensure long-term efficacy. Temporary pigmentation problems may occur during the procedure.
Source : https://www.sciencedirect.com/science/article/abs/pii/S0190962200323337
Valeria B.Campos MD, Christine C. Dierickx, MD, William A. Farinelli, BS, Tai-Yuan D. Lin, MD, Woraphong Manuskiatti, MD, and R. Rox Anderson, MD
After just one treatment, the 1-month follow-up showed a reduction in hair regrowth of 22-31%, while between the 3-month follow-up and the 20-month follow-up, hair loss remained broadly stable at between 65% and 75%.
Diode laser with 800 nm wavelength, cooled treatment head for long-lasting results in laser hair removal
The aim of this study was to determine the safety and long-term effectiveness of an 800 nm diode laser for hair reduction. The study involved the treatment of 50 participants, most of whom had skin types II and III on the Fitzpatrick scale, i.e. dark brown or black hair. The laser hair removal treatments were performed using an 800 nm diode laser (800 nm, 10-40 J/cm2, 5-30 msec, 9 mm 9 mm, step 5, cooled head C). Each participant was treated on 8 different body parts, which the researchers treated with different energy delivery, different settings and different treatment numbers. Results were monitored continuously between treatments, with follow-up sessions at 1, 3, 6, 9 and 20 months after treatments. After just one treatment, the 1-month follow-up showed a reduction in hair regrowth of 22-31%, while between the 3-month follow-up and the 20-month follow-up, hair loss remained broadly stable, between 65% and 75%. A relatively longer delay in hair regrowth occurred after two treatments. Side effects were limited to transient pigment changes in participants with skin types II and III.
Overall, the 50 subjects studied experienced a 65-75% hair reduction, making 800nm variable pulse diode laser treatments safe and effective for laser hair removal. The cooled sapphire treatment head diode laser is safe and effective for long-term hair removal in individuals with skin types II and III.
Wendy W. Lou, MD, Adelle T. Quintata1, MD, Roy G. Geronemus, MD, and Melanie C. Grossman, MD
The hairs that grow back after treatment are often thinner and lighter. After diode laser treatment, 38 of the 41 subjects became responsive to treatment and the hairs that grew back became thinner and lighter.
The diode laser is more efficient than the ruby laser
Laser pulses that selectively damage pigmented hair follicles are a useful treatment for hypertrichosis, or werewolf syndrome (excessive hair growth). The hairs that grow back after treatment are often thinner and lighter. In this study, hair diameter and optical transmission (light transmission) (700 nm) were measured before and after ruby (694 nm) and diode (800 nm) laser treatments. The hairs of 47 and 41 subjects treated with ruby (0.3 ms and 3 ms) and diode (10-20 ms) lasers, respectively, were collected as part of the clinical study. "Responders" were defined as subjects who had significant, long-term hair loss at 9 and/or 12 months post-treatment follow-up. The ruby laser responders (34/47) had significantly thinner (reduced diameter) and lighter (increased transmittance) hairs growing back. In the "non-responders" (13/47), the regrowth hairs were lighter but not thinner as a result of the treatments. The absorption coefficient (absorbance) of the regrowth hair (assuming Beer's law) was significantly reduced by the 0.3 ms ruby laser treatment, but was not changed by the 3 ms ruby laser or diode laser treatment.
After the diode laser treatment, 38 of the 41 subjects became responsive to the treatments, and the re-growing hair became thinner and lighter. These results suggest that laser treatments may affect the structural restoration of the hair (hair size), folicular pigmentation (absorption coefficient), or both. The re-growth of thinner hair (reduced diameter) is associated with actual hair loss. After high-impulsive energy transmission (3 ms ruby laser; diode laser), the re-growing hair was thinner and lighter, which is associated with a decrease in the diameter of the hair. In contrast, short ruby laser pulses (0.3 ms) alone are capable of inhibiting follicular pigmentation, in addition to affecting the diameter of the hair, this can cause a total re-growth of brighter hair in "non-responsive" individuals treated with 0.3 ms pulses. Laser reduction of the diameter and/or pigmentation of the hair is a long-term solution for treating the disease and reducing the hair.
Source: https://pubmed.ncbi.nlm.nih.gov/10749557/
Tai-Yuan David Lin and Christine C. Dierickx and Valeria B. Campos, William A. Farinelli, Joshua Rosenthal, R. by Rox Anderson
Diode laser hair removal with 800 nm wavelength diode laser - retrospective study involving 1000 women with skin types II and VI
Overall, all participants were satisfied with the results achieved after 4 or 5 treatments, with a hair loss of 70% to 80% in treatment on the face and neck, and a loss of hair of up to 95% in treatment of arms, legs and bikini line. In most cases, the subjects experienced a hair loss of 25-30% for each treatment, so after 3-4 treatments the hair loss was already 80% and all the remaining hair became thin and colorless. After the treatments, the satisfaction among subjects was high, about 90-95% of them were satisfied with the results achieved.
Laser hair removal is safe and effective for people with skin types II and VI
This retrospective study examined laser hair removal treatments with the Lumenis LightSheer laser system in the first 1000 women (Fitzpatrick skin type II – VI) treated at the Laserex Skin & Cosmology Clinic in Lahore, Pakistan. The age of the women treated was between 15 and 55 years. For the treatments, two different Lumenis LightSheer models were used in the research, the EP (9mm2 control interface) and the XC (12mm2) control heads. Subjects were treated in 3 to 7 treatments with irradiation of 25 and 45 J/cm2. In the case of the EP, the duration of laser pulses was 30 ms for the first 4 times, then during the fifth time the hair diameter decreased, shorter pulse periods were applied during the treatment, for which automatic adjustment was applied with OptiPulseTM technology.
Overall, all participants were satisfied with the results achieved after 4 or 5 treatments, with a hair loss of 70% to 80% in treatment on the face and neck, and a loss of hair of up to 95% in treatment of arms, legs and bikini line. In most cases, the subjects experienced a hair loss of 25-30% for each treatment, so after 3-4 treatments the hair loss was already 80% and all the remaining hair became thin and colorless. After the treatments, the satisfaction among subjects was high, about 90-95% of them were satisfied with the results achieved. Smaller scarring and pigmentation changes were observed in a small percentage of women treated, however, these symptoms proved to be temporary and disappeared after the course of treatment. The study demonstrates that the Lumenis LightSheer laser system enables safe and effective laser hair removal for people with Fitzpatrick II and VI skin types.
Source: https://s-thetic-derma.de/images/studien/haarentfernung/laser_hair_removal.pdf
Atif Kazmi, MD
89% of subjects experienced permanent hair loss and 100% experienced short-term hair loss. These results were created with minimal side effects, laser energy does not damage the epidermis.
Final hair reduction with the Lumenis LightSheer diode laser
The use of lasers for hair removal has been studied for years. With this procedure, the laser light absorbs the melanin in the hair, thereby damaging the follicular epithelium. This study examined the effectiveness of Lumenis LightSheer diode laser hair removal, with 92 participants all experiencing temporary hair loss, and 89% of them achieving permanent hair loss. In the case of rejuvenating hair, the hair has become thinner and significantly lighter. The widespread clinical use of high-performance diode laser has resulted in recommendations for the selection of patients and the proper use of the laser. It has been proven that with the use of the right settings, treatments allow permanent hair removal without damaging the epidermis, regardless of skin type.
Overall, both temporary and permanent hair loss can be reached safely and effectively with the Lumenis LightSheer diode laser. An effective hair removal with excellent results by adjusting the duration and flow of the laser pulse to a given hair color, skin color and skin type. 89% of subjects experienced permanent hair loss and 100% experienced short-term hair loss. These results were created with minimal side effects, laser energy does not damage the epidermis.
Christine C. Dierickx, M.D.
In 65% of cases, the response to treatment was either good or good after the first treatment, but the rate of positive response was significantly increased after multiple treatments. More than 84% of the treatment areas produced good or excellent results after the second and subsequent treatments.
Extensive studies of the LightSheer system on a wide range of subjects have shown not only effectiveness but also safety.
The 800 nm high-performance, long-impulsive laser energy, contact-cooled diode laser is safe and effective in reducing pigmented hair in different skin types. This study demonstrated the effectiveness and safety of laser hair removal by performing 800 treatments, involving 250 treated areas and 144 subjects with Fitzpatrick II-V skin types. Most subjects had Fitzpatrick III or IV skin type and had dark brown or black hair. Nearly 50% of the treatments were carried out on subjects with type IV or V skin, with two-thirds of treatments on the face or neck. More than 90% of the treated areas have undergone two or more treatments. The interval between treatments was between 2 and 56 weeks, with an average of 10 weeks between two treatments.
In 65% of cases, the response to treatment was either good or good after the first treatment, but the rate of positive response was significantly increased after multiple treatments. More than 84% of the treatment areas produced good or excellent results after the second and subsequent treatments. Similar responses occurred in all treated skin types, which demonstrated the high level of safety of the treatment method. 96% of the subjects were highly or moderately satisfied with their treatments. Lumenis LightSheer’s unique cooling system and high pulse treatments reduce the chance of skin damage and allow for safe and effective hair removal even for subjects with darker skin.
Source: https://mikronmed.se/document/lightsheer-studie.pdf
Ruby J. Pardo, MD, Ph.D., Judy Fahey, RN
Treatments with ET treatment head and treatment with HS treatment head reduced the amount of hair in the treated area to a similar extent, so the result of the rate of hair removal was statistically not different after the two treatments. The hair loss on the side treated with Lumenis LightSheer ET was 81 ± 13% compared to 85 ± 9% on the HS side.
3 Month Comparison of Treatment Results for Chinese Women with HS and ET
The aim of the study was to compare clinical effectiveness, safety and pain for Lumenis LightSheer Duet ET and HS during Chinese women’s axil area laser hair removal.
During the study, 36 Chinese women received 3 suitable laser hair removal treatments, one of which was treated with Lumenis LightSheer ET and the other with the HS treatment head. During the treatments, the effectiveness of hair removal and momentary pain associated with treatment were also evaluated.
Results were evaluated one month after the last treatment, treatment with ET treatment head and treatment with HS treatment head reduced the volume of hair in the treated area to a similar extent, so the result of the rate of hair removal was statistically not different after the two treatments. The hair loss on the side treated with Lumenis LightSheer ET was 81 ± 13% compared to 85 ± 9% on the HS side. The score for immediate pain during the first treatment was 5.71 ± 1.74, for LightSheer Duet HS, and 6.86 ± 1.80, which is a statistically significant difference. In the second and third treatments, the instant pain scores for LightSheer Duet HS were lower than in the lightSheer ET treatments but the differences were not statistically significant during these occasions.
It can be said that both methods are safe and effective in terms of laser hair removal for Chinese women, but LightSheer Duet HS treatment is less painful.
Source: https://pubmed.ncbi.nlm.nih.gov/22091798/
ZHhan-Chao Zhou, Li-Fang Guo & Michael H. gold
The second evaluation was carried out 4 weeks after the second treatment, during which the researchers observed hair loss of 78.56% (diode laser) and 64.50% (Nd:YAG laser), the difference was statistically significant.
The 800 nm diode laser and 1064 nm Nd:YAG laser have been successfully used for laser hair removal for years. The aim of the study was to compare the effectiveness of diode laser and Nd:YAG laser in terms of hair removal of the ankle area in Chinese women. In the study, 29 Chinese women underwent a total of three laser hair removal treatments at four-week intervals, one with diode laser (34-38 J/cm2) and the other with Nd:YAG laser (34-40 J/CM(2)). The evaluation of the study included a decrease in hair diameter after treatment, hair growth rate, total hair loss, and immediate pain associated with treatments. The initial assessment was carried out 4 weeks after the first treatment and the average hair diameter decrease was 2.44 μm and -0.6 μm on the diode-laser and Nd:YAG laser side, and the hair re-growth rate was 61.93 μm/day and 59.84 μm / day respectively, with no statistically significant difference. In the first follow-up, the hair loss was 60,09% for the diode laser and 41,44% for the area treated with Nd:YAG laser. The second evaluation was carried out 4 weeks after the second treatment, during which the researchers observed hair loss of 78.56% (diode laser) and 64.50% (Nd:YAG laser), the difference was statistically significant. For the instant pain score, significant differences were observed between diode laser and Nd:YAG laser treatments: the first time the scores were 6.97 and 6.17, the second time 5.48 and 6.69 and the third time 5.76 and 7.45.
Overall, the diode laser showed greater efficiency and proved more convenient than the Nd:YAG laser in terms of hair removal of the ankle area for Chinese women. The scores associated with immediate pain sensation were lower for the diode laser than for the Nd:YAG laser treatments, so the removal of hair with the diod laser is more comfortable.
Source: https://pubmed.ncbi.nlm.nih.gov/20825259/
Ruohong Li, Zhanchao Zhou & Michael H. gold
50% of the subjects achieved a 60% or greater degree of persistent hair loss as a result of only up to 3 times. ). According to the hair growth cycle, 6 treatments were needed to satisfactory results in the area of the face, while 3-4 treatments are sufficient for effective hair loss in the ankle and the bikini line. Hair loss in the subjects involved in 4-7 treatments was more than 80% in the Japanese subject.
Lumenis LightSheer is a safe and effective treatment for Asian skin types (Japanese skin types)
In this retrospective study of 101 Japanese subjects, the researchers were able to temporary hair loss even with one treatment. Multiple treatments were required to longer-lasting results, with 50% of subjects achieving 60% or more of lasting hair loss as a result of only up to 3 treatments. The study involved 28 men and 73 women with a median age of 30.3 and treated areas of the ankle, arms, legs, face and bikini line. Only mild, temporary side effects occurred during treatment, and to maximize the effectiveness and safety of treatment, increasing the duration of laser pulses and cooling the skin during treatment is of paramount importance, especially in people with darker skin tones. Treatment results were evaluated on average 9.4 months after the last treatment (minimum 6 months and maximum 22 months). According to the hair growth cycle, 6 treatments were needed to satisfactory results in the area of the face, while 3-4 treatments are sufficient for effective hair loss in the ankle and the bikini line. Hair loss in the subjects involved in 4-7 treatments was more than 80% in the Japanese subject.
The results of research on Japanese subjects showed that 800 nm diode laser hair removal with the Lumenis LightSheer system is just as effective and safe for Asian people as it is for the Kakuku population.
Taro Kono, MD and Motohiro Nozaki, MD
More than 90 percent of subjects received two treatments, and 70 percent took three treatments.
Long-term follow-up showed that hair loss was 60% in 25 patients 6 months after the last treatment. Overall, the average hair loss was 60% after two treatments. Subjects with light skin and dark hair experienced excellent results, as well as even V. Subjects with Fitzgerald skin type can also be treated effectively and safely.
LightSheer diode laser is a safe and convenient hair removal system
In current laser systems, although the available fluency varies, clinically effective lasers are capable of delivering power above 30-40 J/cm2. Clinical trials and four years of testing of different laser systems show that larger wavelength laser pulses are associated with greater effectiveness and fewer postoperative clinical side effects such as blistering and pigmentation problems.
The researchers treated 125 patients who received one or more Lumenis LightSheer laser treatments over a 10-month period. Treatment of different areas was carried out: the lips, face, neck, thighs, bikini line and back were treated. The protocol included a week after each treatment and then a month after each check-up. Subjects were re-treated when they experienced a significant re-growth of hair, which was a period of 1-3 months. More than 90 percent of subjects received two treatments, and 70 percent took three treatments.
Long-term follow-up showed that hair loss was 60% in 25 patients 6 months after the last treatment. Post-treatment side effects included erythema and edema lasting 12 to 24 hours. Sometimes blistering, pigmentation disorders and peeling of the skin were among the side effects, but they were not permanent. No textural changes or scarring were observed on the surface of the skin in the treated areas.
Overall, the average hair loss was 60% after two treatments. Subjects with light skin and dark hair experienced excellent results, as well as even V. Subjects with Fitzgerald skin type can also be treated effectively and safely. The results of the research showed that the 800 nm LightSheer diode laser is more effective in laser hair removal in darker skin subjects than the alexandrit and ruby laser systems. The possibility of contact cooling also allows for the use of a higher degree of treatment, thus it is possible to treat darker skin tones, thereby expanding the range of patients that can be treated. Larger wavelength energy allows for more efficient treatment and has fewer side effects.
by Robert M. Adrian, M.D., F.A.C.P.
Testing the safety and effectiveness of laser hair removal with a combination of three wavelengths (755 nm, 810 nm and 1064 nm)
A total of 27 areas were treated from 11 participants, the overall score on the GAIS scale was 3.4, and the satisfaction of the participants was high, the researchers received an average score of 4.8.
The aim of the study was to determine the effectiveness of the laser hair removal device, Alma Soprano Titanium, which uses the triple laser energy combination against devices that simultaneously emit one wavelength laser energy. The study was conducted in adult men with Fitzpatrick III-V skin type with the following parameters: fluency between 7-9J/cm2 and pulse frequency between 9-10 Hz, heads of 2cm2 or 4cm2. Participants underwent 6 treatments at intervals of 6 to 8 weeks, with follow-up results within 4-6 months of the last treatment. The effectiveness of the treatments is measured on the GAIS scale with the help of dermatologists, in which case the progress of treatment is assessed between scores 0 and 4, where the score 4 represents a hair loss of more than 75%. The participants were also measured on a scale from 1 to 5, and the researchers were curious about their experiences with treatment pain and side effects.11 participants were treated in a total of 27 areas, the overall score on the GAIS scale was 3.4 and the satisfaction of the participants was high, with an average score of 4.8. There were no undesirable side effects during the treatment. Thus, it can be said that laser hair removal treatments with a combination of three wavelength laser energy are effective and safe.
Akerman Lehavit MD, Galili Eran MD, Lapidoth Moshe MD MPH & Levi Assi MD
Three integrated wavelengths (755 nm, 810 nm and 1064 nm): research into the effectiveness and safety of the innovative combination of laser hair removal
During the study, participants experienced a hair loss of 75.6% after only 4 treatments, thereby clinically demonstrating the loss of terminal and vellus hair due to the effects of the treatments.
The Alma Soprano Titanium uses the three most suitable and effective wavelengths: the combined effect and simultaneous use of the 755nm, 810nm and 1064nm laser energy treats the hair follicles at different tissue depths at the same time, thereby achieving unprecedented effectiveness in laser hair removal.
In this study, conducted in 2022, the effectiveness of the combined power of the three lasers was tested, the study involved 22 men. During the study, participants experienced a hair loss of 75.6% after just 4 treatments, thereby clinically demonstrating a loss of terminal and vellus hair as a result of treatments. The combination of three different wavelengths (755 nm, 810 nm and 1064 nm) in a single device provided a wide range of absorption and penetration during treatments, thus enabling safe and effective treatment.
Source: https://pubmed.ncbi.nlm.nih.gov/34418269/
by Pablo Naranjo García, Rodolfo López Andrino, Carlos Gómez González, Hernán Pinto
Effectiveness and safety of three-wave laser hair removal in skin types from IV to V on the Fitzpatrick scale
In the study, laser hair removal resulted in an 85.5% decrease in hair density in 6 subjects with Fitzpartick skin types IV and V.
Thanks to its special technology, Alma Soprano Titanium allows for an effective treatment of almost all skin and hair types.
The study involved 25 people, 23 women and 2 men with a darker skin type. The diode laser using three wavelengths of laser energy (755 nm, 810 nm and 1064 nm) has proven effective and safe for darker skin tones (Fitzpatrick IV and V skin types) as well as sunburned skin. In the study, laser hair removal resulted in an 85.5% decrease in hair density in 6 subjects with Fitzpartick skin types IV and V.
Source: https://pubmed.ncbi.nlm.nih.gov/33567152/
E P Raj Kirit, Aishwarya Sivuni, Sridevi Ponugupati, Michel H Gold
„everyone deserves beauty”
Phone:
+36 1 374 6060
Email: info@aesthetica.hu
