Three wavelengths integrated: Efficacy and safety of a novel combination for hair removal.

BACKGROUND: Laser hair removal is one of the most popular aesthetic procedures. AIMS: The study aimed to assess the efficacy and safety of a novel applicator combining three wavelengths (1064 nm, 810 nm, and 755 nm) for hair removal. PATIENTS/METHODS: This prospective study included a four-session hair removal treatment with three wavelengths combined and emitted simultaneously using an in-motion technique. Patients were treated in eight-week intervals between each session and a follow-up of 3 months. RESULTS: Twenty-two men (mean age 41.5 years, SD = 6.1) were included: two (9.1%) Fitzpatrick skin type II, 19 (86.4%) type III, and one (4.5%) type IV. Treated areas were two abdomens (14%), fourteen backs (64%), and five thoraxes (23%). Hair characteristics were evaluated with a dermatoscopic imaging system. Three months after the last session, the mean decrease in the hair count was of 75.6% (SD 5.9) (p < 0.0001), in hair density of 75.6% (SD 5.9) (p < 0.0001), in the terminal hair number of 60.1% (SD 55.0) (p < 0.0001), and in the vellus hair number of 39.7% (SD 72.9) (p = 0.0001). CONCLUSION: The combined three different wavelengths in a single device provided a wide range of absorption and penetration, allowing for a safe and effective treatment.

Home-based devices in dermatology: a systematic review of safety and efficacy.

There is increasing demand for home-based devices for the treatment of dermatologic conditions and cosmesis. Commercially available devices include intense pulsed light, laser diodes, radiofrequency, light-emitting diodes, and ultraviolet B phototherapy. The objective of this report is to evaluate the current evidence regarding the efficacy and safety of home-based devices for the treatment of skin conditions. A systematic search of PubMed, Embase, and Cinahl was conducted on November 9, 2020 using PRISMA guidelines. Original research articles that investigated the efficacy and safety of home-based devices for dermatologic use were included. Bibliographies were screened for additional relevant articles. Strength of evidence was graded using the Oxford Centre for Evidence-Based Medicine guidelines. Clinical recommendations were then made based on the quality of the existing literature. After review, 37 clinical trials were included-19 were randomized controlled trials, 16 were case series, and 2 were non-randomized controlled trials. Ultimately, from our analysis, we recommend the home-based use of intense pulsed light for hair removal, laser diodes for androgenic alopecia, low power radiofrequency for rhytides and wrinkles, and light-emitting diodes for acne vulgaris. Trials investigating ultraviolet B phototherapy for psoriasis revealed mixed evidence for home treatments compared to clinic treatments. All devices had favorable safety profiles with few significant adverse events. Limitations to our review include a limited number of randomized controlled trials as well as a lack of data on the long-term efficacy and safety of each device.

A Combined Triple-Wavelength (755nm, 810nm, and 1064nm) Laser Device for Hair Removal: Efficacy and Safety Study.

BACKGROUND: Photoepilation by a single-wavelength laser device is being commonly used for hair removal. Whether emitting multiple laser wavelengths to induce hair unit damage would be beneficial is yet to be established. OBJECTIVE: To evaluate the safety and efficacy of hair reduction using a novel simultaneous multi-wavelength laser device. PATIENTS AND METHODS: A retrospective cohort study was carried out among adult males. Hairy sites were treated by a simultaneous triple-wavelength (755nm, 810nm and 1064nm) laser device (Soprano Titanium. Caesarea, Israel: Alma Lasers Ltd). Treatment parameters were: fluence of 7-9J/cm2, pulse frequency of 9-10Hz and spot sizes of 2cm2 or 4cm2. Participants underwent up to 6 treatments at 6-8 weeks intervals and were followed for 4-6 months. Clinical photography before and after treatment was documented. Treatment efficacy was assessed using Global Aesthetic Improvement Scale (GAIS; scale of 0 [no improvement] to 4 [excellent improvement; Over 75% hair reduction]) by two independent dermatologists. Participants’ satisfaction was rated on a scale of 1 (not satisfied) to 5 (very satisfied). Pain perception and adverse events were recorded as well. RESULTS: A total of 27 treatment sites among 11 participants, with Fitzpatrick skin type III-V, were included. Mean hair reduction was 3.4 out of 4 in the GAIS. Participants' satisfaction rate was high (mean, 4.8). No adverse events were recorded. CONCLUSION: Simultaneous triple-wavelength laser device is a safe and effective hair removal modality. J Drugs Dermatol. 2020;19(5): doi:10.36849/JDD.2020.4735.

Long-term Facial and Body Hair Removal With a Combined Radiofrequency and Optical Home-Use Device for All Skin Types.

OBJECTIVES: To evaluate long term effectiveness and safety with the use of a combined radiofrequency and optical home hair removal device in all skin types and over both facial and body areas. METHODS: A combined intense pulsed light (IPL) and radiofrequency (RF) home device was used for hair removal. Two separate study designs were evaluated. In the first design, bilateral body areas were treated with 7 weekly procedures and then unilateral areas received up to 12 monthly maintenance treatments while the corresponding other side received no further therapy. For the second design, facial areas received 4 procedures in 2 to 5 days visits, followed by 2 weekly, and then 6 biweekly procedures. All patients in both study designs had hair count evaluations up to 12 months post their last procedure. The highest energy used was 4 J/cm². RESULTS: In the first design, 58 subjects participated of which 15% were skin types V-VI. A total of 188 anatomical sites were treated. Hair reduction at 6 and 12 months post the last procedure was 56% and 52% respectively for the maintenance side and 47% and 37% for the non-maintenance side. For the second design, 19 subjects had 59 facial sites treated. Fifteen percent were skin types V –VI. The overall hair reduction at the end of receiving their procedures was 45%. At 12 months post the last procedure, the hair reduction was 42%. Aside for transient mild erythema, there were no adverse effects noted. CONCLUSIONS: Long term persistent hair reduction was achieved using an RF/IPL home-use hair reduction device. The combination of RF and optical energies allowed for the effective application of low energy usage. All skin types and both facial and body anatomical regions tolerated the procedures very well. J Drugs Dermatol. 2020;19(5):498-503. doi:10.36849/JDD.2020.4741.

Innovative 1064-nm Nd:YAG Laser Significantly Improves Keratosis Pilaris, A Randomized, Double-Blind, Sham-Irradiation-Controlled Trial.

BACKGROUND AND OBJECTIVE: Keratosis pilaris (KP) is a common follicular disorder for which various topical agents and energy-based devices have been used with some efficacy. To evaluate the efficacy of a novel 1064-nm Nd:YAG laser for the reduction of skin roughness, erythema, and hyperpigmentation in KP subjects. STUDY DESIGN/MATERIALS AND METHODS: Twenty-three subjects with untreated KP on the upper outer arms participated in a randomized, single-blind fashion. One arm of each subject was divided into upper and lower parts. One part was randomized to be treated with an innovative 1064-nm Nd:YAG laser, while the other part received sham irradiation. Subjects received four consecutive treatments at 4-week intervals. Antera3D was used to measure skin roughness, erythema, and hyperpigmentation at baseline and 4 weeks after the last treatment. Moreover, clinical outcomes were also evaluated by subjects' Global Improvement Score (GIS) and subjects' satisfaction grading scores. RESULTS: Twenty-three subjects completed the study. There was statistically significant reduction of skin roughness measured by Antera3D compared with control group (P < 0.001). There were statistically significant improvements of skin roughness, erythema, hyperpigmentation, and overall appearances graded by subjects' Global Improvement Score (P < 0.001 all). Subjects' satisfaction scores were graded significantly better in treatment parts (P < 0.001). No adverse events including burning, bulla, erosion, post-inflammatory hyper/hypopigmentation, and scar formation developed in any subjects throughout the study period. CONCLUSION: This innovative 1064-nm Nd:YAG laser has proved to significantly and safely reduce skin roughness in Thai KP subjects compared with control after four sessions. Lasers Surg. Med. © 2019 Wiley Periodicals, Inc.

A cut above the rest: Trimming as a painless depilatory.

Shaving and other modes of epilation can cause undue anxiety, pain, or skin irritation in children. Here, we present hair trimming as a safe, painless, and cost-effective alternative for patients with unwanted hair which may be performed indefinitely or until the child is old enough to direct management. In select cases, removing unwanted hair using this technique may facilitate dermatologic surveillance.

Revisiting Perioperative Hair Removal Practices.

The standard of practice for perioperative hair removal is largely based on research that is outdated and underpowered. Although there is evidence to support the practice of clipping instead of shaving, current recommendations are to remove hair only when absolutely necessary. Human hair is bacteria-laden and challenging to disinfect, and clipping can be a safe method of hair removal that does not damage the skin. This article considers the removal of hair at the incision site with clippers, either before the patient enters the OR or in a manner that completely contains clipped hair, for every procedure, not just when absolutely necessary. There have been only two studies to date comparing clipping with no hair removal; more research is needed on this subject.

Laser Treatment of Skin of Color for Medical and Aesthetic Uses With a New 650-Microsecond Nd:YAG 1064nm Laser

Individuals with skin of color are a rapidly growing portion of the cosmetic procedures market. There are unique challenges to treating skin conditions in skin of color patients. This article and roundtable discussion focus on the use of energy-based modalities, particularly a 650-microsecond 1064nm laser that delivers energy in a collimated beam. Alone or in combination with other therapies, the 650-microsecond 1064nm laser has been used successfully to treat melasma, acne, postinflammatory hyperpigmentation, pseudofolliculitis barbae, hair removal, acne keloidalis nuchae, and aging skin in skin of color. J Drugs Dermatol. 2019;18(4 Suppl 1):s135-137.

Simple shaving combined with photodynamic therapy for refractory bowen disease.

Bowen Disease (BD), also known as squamous cell carcinoma in situ, requires treatment to prevent progression to invasive cancer.. Photodynamic therapy (PDT) has been widely employed to treat BD. However, there are BD patients who undergo PDT but experience poor efficacy and recurrence. We have considered that for some, the reason is the depth of PDT penetrating tissue to be limited. Therefore, we combined simple shaving with PDT to treat 10 patients with a total of 44 advanced BD lesions. After local injection of anesthesia, the lesions were shaved once in situ, then a total of three PDT sessions were applied for each patient. At 12 weeks, all of BD lesions (100%) have shown complete clinical response. After more than 12 months follow-up, the RR was 0, and all lesions showed a good or excellent cosmetic outcome. The patient's symptoms were alleviated with improvement in the quality of life. For those with advanced BD, which are more than 3 cm in diameter, with unclear borders, ulcers, multiple occurrences and those that appear on the face and neck that are not suitable for extended resection by routine surgery, combined simple shaving with PDT is recommended.

Dose-response of human follicles during laser-based hair removal: Ex vivo photoepilation model with classification system embracing morphological and histological features.

OBJECTIVES: Photoepilation is a commonly used technology in home-use devices (HUDs) and in professional systems to remove unwanted body hair using pulses of laser or intense pulsed light (IPL). Albeit HUDs and professional systems operate at different fluences and treatment regimes, both demonstrate high hair reduction. The underlying mechanisms, however, remain unknown partly due to high divergence of the existing literature data. The objective of this study was to develop an ex vivo photoepilation model with a set of criteria evaluating response to light pulses; and to investigate dose-response behavior of hair follicles (HFs) subjected to a range of fluences. METHODS: After ex vivo treatment (single pulse, 810 nm, 1.7-26.4 J/cm2 , 4-64 ms pulse) human anagen HFs were isolated and maintained in culture for 7-10 days. Response to light was evaluated based on gross-morphology and histological examination (H&E and TUNEL stainings). RESULTS: HFs treated ex vivo demonstrated a dose-dependent response to light with five distinct classes defined by macroscopic and microscopic criteria. Fluences below 13.2 J/cm2 provoked catagen-like transition, higher fluences resulted in coagulation in HF compartments. CONCLUSION: Observed changes in the HF organ culture model were reflected by clinical efficacy. The developed photoepilation model provides an easy and fast method to predict clinical efficacy and permanency of light-based hair removal devices. Lasers Surg. Med. © 2019 Wiley Periodicals, Inc.

Eradication of hairy mouth after oncological resection of the tongue and floor mouth using a diode laser 808 nm. Postoperative pain assessment using thermal infrared imaging.

OBJECTIVES: Vascularized soft tissue flaps are often harvested from hair-bearing areas, such as the radial forearm or anterolateral thigh, making their use in oral reconstruction problematic due to postoperative hair growth. The presence of intact hair follicles in free tissue transfer and continued hair growth at the recipient site can result in difficulties with oral hygiene, intraoral irritation, food trapping, and patient distress. This study was to evaluate the intraoral efficacy and safety of a diode laser 808 nm when used for hair removal. MATERIALS AND METHODS: Sixteen male patients, between 2010 and 2017, were referred for intraoral hair eradication with a history of squamous cell carcinoma of the tongue or floor mouth resection. An 808 nm diode laser (Stark 808, Plume s.r.l., Rome, Italy) was used to remove the intraoral hair. Each patient received a total of six treatments at 4-week intervals. Perifollicular pain was quantified by the physician using visual analog scales. Follow-up visits were scheduled at 1, 4, and 6 days to check the state of the tissues. The recall program included assessments of VAS, erythema, and perifollicular temperature. Patients were followed up for long-term assessments at 6 and 12 months after the final treatment session. RESULTS: All patients presented well with no occurrence of symptoms, indicating possible perifollicular inflammation. Based on the VAS scores, very mild discomfort during laser irradiation was recorded in all patients, with average pain score of 10.98 ± 1.42. No pain or discomfort was recorded 1, 4, and 6 days after the procedure. After the third pulse of light was applied, the average temperature with standard deviation of the hair tip with both the dark and light skin was 74.4 ± 11.7°C. The difference in temperature before the procedure (basal measurement 37.5 ± 2.8°C) and immediately after laser irradiation was 36.9 ± 3.7°C. The difference in temperature disappeared after 0.29 seconds, and no temperature increase was recorded on days 1, 4, or 6. In all the patients, the hair clearance between baseline and the 6th treatment, the 6-month follow-up, and the 12-month follow-up rated as significant P < 0.05. The mean percentage of hair reduction was 97.3% at 12 months. CONCLUSION: In conclusion, the clinical findings demonstrate the safety and efficacy of the 808 nm diode laser system for intraoral hair removal Lasers Surg. Med. 51:516-521, 2019. © 2019 Wiley Periodicals, Inc.

Patient Reported Improvement in Quality of Life Associated With Successful Laser Hair Reduction at Hemodialysis Site With 1064-nm Nd:YAG Laser.

Laser hair reduction is a well-established modality for a wide range of medical indications. Laser hair reduction can be beneficial for hemodialysis patients who undergo repeated adhesive tape application and removal at their hemodialysis site during hemodialysis sessions. There is a paucity of published literature on efficacious laser hair removal treatments for hemodialysis patients. Herein, we present a case of a 50-year-old male (Fitzpatrick III) with end-stage renal disease on hemodialysis, who achieved successful laser hair reduction at his hemodialysis vascular access site with five sessions of a neodymium:yttrium-aluminium-garnet (Nd:YAG) laser (1064 nm) to improve his quality of life by reducing the hair burden at the adhesive tape site application. We recommend providing this safe and effective hair reduction treatment option for hemodialysis patients given the decreased quality of life associated with end stage renal disease and hemodialysis. J Drugs Dermatol. 2018;17(7):794-795.

Versajet-Assisted Hydraulic Epilation Through Small Incisions for Axillary Osmidrosis.

BACKGROUND: Osmidrosis is a malodorous disease caused by the breakdown of sweat secreted from the apocrine glands by surface bacteria. The aim of this study was to evaluate the effect of Versajet-assisted hydraulic epilation for the treatment of axillary osmidrosis. METHODS: Thirty-two patients with axillary osmidrosis (64 axillae) underwent Versajet-assisted hydraulic epilation between January 2016 and January 2017. Subjective assessments were evaluated by a patient survey at least 3 months after the procedure. RESULTS: There were no complications other than one mild pigmentation in the axilla at 3 months after the procedure. Thirty-two patients evaluated malodor elimination as good. No patients evaluated it as fair or poor. There were no recurrences. CONCLUSION: Versajet-assisted hydraulic epilation is an ideal surgical procedure for the treatment of axillary osmidrosis that decreases complications and recurrence. NO LEVEL ASSIGNED: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

Laser and Light Treatments for Hair Reduction in Fitzpatrick Skin Types IV-VI: A Comprehensive Review of the Literature.

Unwanted facial and body hair presents as a common finding in many patients, such as females with hirsutism. With advances in laser and light technology, a clinically significant reduction in hair can be achieved in patients with light skin. However, in patients with darker skin, Fitzpatrick skin types (FST) IV-VI, the higher melanin content of the skin interferes with the proposed mechanism of laser-induced selective photothermolysis, which is to target the melanin in the hair follicle to cause permanent destruction of hair bulge stem cells. Many prospective and retrospective studies have been conducted with laser and light hair-removal devices, but most exclude patients with darkly pigmented skin, considering them a high-risk group for unwanted side effects, including pigmentation changes, blisters, and crust formation. We reviewed the published literature to obtain studies that focused on hair reduction for darker skin types. The existing literature for this patient population identifies longer wavelengths as a key element of the treatment protocol and indicates neodymium-doped yttrium aluminum garnet (Nd:YAG), diode, alexandrite, and ruby lasers as well as certain intense pulsed light sources for safe hair reduction with minimal side effects in patients with FST IV-VI, so long as energy settings and wavelengths are appropriate. Based on the findings in this review, safe and effective hair reduction for patients with FST IV-VI is achievable under proper treatment protocols and energy settings.

Laser-assisted hair removal for facial hirsutism in women: A review of evidence.

Poly cystic ovarian syndrome (PCOS) has been described as the common diagnosis for hirsutism in women. Facial hirsutism is by far the most distressing symptom of hyperandrogenism in women with PCOS. A statistically significant improvement in psychological well-being has been reported in patients with PCOS allocated for laser-assisted hair removal. The theory of selective photothermolysis has revolutionized laser hair removal in that it is effective and safe, when operated by sufficiently trained and experienced professionals. Long-pulsed ruby (694 nm), long-pulsed alexandrite (755 nm), diode (800-980 nm), and long-pulsed Nd:YAG (1064 nm) are commercially available laser devices for hair removal most widely studied. This article will introduce the fundamentals and mechanism of action of lasers in hair removal, in a contemporary literature review looking at medium to long term efficacy and safety profiles of various laser hair removal modalities most widely commercially available to date.

Long-term Comparison of a Large Spot Vacuum Assisted Handpiece vs the Small Spot Size Traditional Handpiece of the 800 nm Diode Laser.

BACKGROUND The 800 nm long-pulsed diode laser machine is safe and effective for permanent hair reduction. Traditionally, most long-pulsed diode lasers used for hair removal had a relatively small spot size. Recently, a long-pulsed diode laser with a large spot size and vacuum assisted suction handpiece was introduced. The treatment parameters of each type of handpiece differ. Short and long-term clinical efficacy, treatment associated pain, and patient satisfaction are important factors to be considered. OBJECTIVE: This study aims to conduct a direct head to head comparison of both handpieces of the 800nm long-pulsed diode laser by evaluating long term hair reduction, treatment associated pain and patient satisfaction. METHODS: Thirteen subjects were enrolled in this prospective, self-controlled, single-center study of axillary laser hair removal. The study involved 4 treatments using a long pulsed diode laser with a large spot size HS handpiece (single pass), HS handpiece (double pass), and a small spot size ET handpiece according to a randomized choice. The treatment sessions were done at 4-8 week intervals with follow up visits taken at 6 and 12 months after the last treatment session. Hair clearance and thickness analysis were assessed using macro hair count photographs taken at baseline visit, at each treatment session visit and at follow up visits. Other factors including pain, treatment duration, and patients' preference were secondary study endpoints. RESULTS: At 6 months follow up visits after receiving four laser treatments, there was statistically significant hair clearance in the three treatment arms with 66.1 % mean percentage hair reduction with the ET handpiece, 43.6% with the HSS (single pass) and 64.1 % with the HSD (double). However, at one year follow up, the results significantly varied from the 6 months follow up. The mean percentage hair reduction was 57.8% with the ET handpiece treated axillas (n=9), 16.5% with the HSS (single pass) handpiece treated axillas (n=7), and 46.9% with the HSD (double pass) handpiece treated axillas (n=6). Thus, at one year follow up, there was a significant hair reduction that was similar in both the ET and HSD treated axillae (57.8% and 46.9 %), but only minimal hair reduction (16.5%)was observed in the HSS treated axillae. CONCLUSIONS: This is the first study that compared the long-term efficacy of the ET and HS handpieces after four treatment sessions with up to 12 months follow up after the last treatment session. It is also the first study that provided head to head comparison between HS (double pass), HS (single pass), and ET handpiece taking into consideration the end hair reduction result, the time consumed, the pain score experienced, and the overall patient satisfaction. HSD had better hair clearance and patient satisfaction when compared to ET and HSS. The long term follow up results showed that ET was superior to HSS (P less than .05), but was not superior to HSD (P greater than 0.05). However, HSD treated patients had lower pain scores with HSD than with ET. We conclude that ET handpiece is almost as efficacious as HSD handpiece, and the desired end results could be achieved with HDD with better patient satisfaction, less treatment duration and less pain.

J Drugs Dermatol. 2017;16(9):893-898.