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Karanfil E, Görgü M. Efficacy and Pain Tolerance of Alexandrite Laser Hair Removal at Different Stages of the Menstrual Cycle. Aesthet Surg J 2024; 44:NP558-NP566. [PMID: 38394336 DOI: 10.1093/asj/sjae044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 02/16/2024] [Accepted: 02/16/2024] [Indexed: 02/25/2024] Open
Abstract
BACKGROUND Several different parameters play a role in the transition of hair follicles to the anagen phase, with the role of androgens, progesterone, and estrogen hormones and receptors being significant. OBJECTIVES The effectiveness of laser hair removal (LHR) and pain tolerance during procedure were investigated during 3 different phases of the menstrual cycle. METHODS Forty-eight axillae were randomly divided into 3 groups: menstruation, ovulation, and luteal. Three laser sessions were performed on each axilla at a 1-month interval. Blood hormone levels were measured in the patients. An alexandrite laser was applied during LHR sessions. Before each LHR session and 1 month after the third session, hair follicles in 4-cm2 areas in the center of the axillae were counted. Patients self-assessed the pain they felt during the laser application in each session with a visual pain scale. RESULTS The average values for hair counting in the groups were as follows (M, menstruation; O, ovulation; L, luteinization): M0 = 47.6, M1 = 27.4, M2 = 16.1, M3 = 9.9; O0 = 41.8, O1 = 21.1, O2 = 13.8, O3 = 8.6; and L0 = 49.4, L1 = 27.1, L2 = 15.1, L3 = 9.8. The average values on the visual analog scale scores in the groups were: M1 = 3.94, M2 = 3.06, M3 = 1.94; O1 = 3.50, O2 = 3.06, O3 = 1.69; and L1 = 3.63, L2 = 2.50, L3 = 1.56. Statistical analysis was conducted with Tukey post hoc analysis after analysis of variance. CONCLUSIONS The results of LHR are not affected by changes in hormone levels during the menstrual cycle in females. Although not statistically significant, it has been observed that pain tolerance during laser application is lower during the menstruation cycle. LEVEL OF EVIDENCE: 3
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Shipman WD, Williams MN, Suozzi KC, Eisenstein AS, Dover JS. Efficacy of laser hair removal in hidradenitis suppurativa: A systematic review and meta-analysis. Lasers Surg Med 2024; 56:425-436. [PMID: 38769894 DOI: 10.1002/lsm.23796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 04/17/2024] [Accepted: 04/22/2024] [Indexed: 05/22/2024]
Abstract
OBJECTIVES Hidradenitis suppurativa (HS) is a chronic inflammatory condition characterized by painful nodules, draining tunnels, and fibrotic scarring in intertriginous, hair-bearing areas. The pathogenesis involves follicular occlusion and subsequent rupture, leading to uncontrolled inflammation. Treatment options for HS are limited and lack universal effectiveness. Laser hair removal (LHR) has been explored as a potential treatment; however, the efficacy and appropriate laser modalities remain unclear. This systematic review examined the efficacy and adverse effects of LHR in HS. METHODS A comprehensive literature search was conducted from inception to September 2023 in Ovid MEDLINE, Ovid Embase, and The Cochrane Library (Wiley) with predefined inclusion and exclusion criteria, and a meta-analysis was conducted. RESULTS Ten studies were selected (n = 227 total patients) and included six randomized controlled trials, two nonrandomized experimental studies, and two case series. Various laser modalities, including long-pulsed neodymium-doped yttrium aluminum garnet (Nd:YAG) (n = 115), intense pulsed light (n = 18), Alexandrite (n = 54), intralesional 1064 nm diode (n = 20), and combined fractional CO2 and long-pulsed Nd:YAG laser (n = 20), consistently demonstrated significant improvement in HS disease severity, irrespective of the disease scoring method used. Minimal adverse effects (primarily mild pain and erythema) were reported. A meta-analysis of three studies utilizing long-pulsed Nd:YAG laser demonstrated a standardized mean difference in disease severity of -1.68 (95% confidence interval: -2.99; -0.37), favoring treatment with LHR for HS. CONCLUSIONS Hair follicles are key in HS pathogenesis and all included studies showed a significant improvement in HS disease severity after LHR regardless of the laser device used, likely related to hair follicle unit destruction. HS is a complex and heterogenous condition, and multiple disease scoring methods complicate outcome comparisons across studies. However, LHR, utilizing various techniques, is an effective treatment option for HS with minimal adverse effects.
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Affiliation(s)
- William D Shipman
- Department of Dermatology, Yale University, New Haven, Connecticut, USA
| | - Monica N Williams
- Department of Dermatology, Medstar Georgetown University Hospital, Washington, District of Columbia, USA
| | - Kathleen C Suozzi
- Department of Dermatology, Yale University, New Haven, Connecticut, USA
| | - Anna S Eisenstein
- Department of Dermatology, Yale University, New Haven, Connecticut, USA
| | - Jeffrey S Dover
- Department of Dermatology, Yale University, New Haven, Connecticut, USA
- SkinCare Physicians, Chestnut Hill, Massachusetts, USA
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Abrajano C, Inciong R, Jo S, Garza D, Robinson B, Sclafani S, Navarro K, Chiu B. Using "Appointment Tickets" to Track Visit Duration as a Quality Improvement Initiative After Incorporating Laser Epilation in a Pilonidal Care Clinic. J Pediatr Surg 2024; 59:667-671. [PMID: 38142191 DOI: 10.1016/j.jpedsurg.2023.11.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 11/20/2023] [Indexed: 12/25/2023]
Abstract
BACKGROUND Laser epilation (LE) is effective in decreasing pilonidal disease (PD) recurrence, but laser use has not been a standard practice in pediatric surgery clinic. We hypothesized that "appointment tickets" can 1) track utilization and clinic visit delays, 2) inform patients of their clinic progress in real time. METHODS An observation study was performed on LE patients treated at our PD clinic 3/2021-7/2022. Two exam rooms were utilized for manual shaving and one for LE. After gluteal cleft hair shaving, various anesthetic (topical lidocaine, ice, or cryotherapy) was applied prior/during LE. At each visit, patient received an "appointment ticket" on which providers recorded the visit start/end time, manual shaving duration, local anesthetic application/wait time, LE duration. Visits were scheduled for 20 min-slots. Clinic staff recorded any delays (>20 min). RESULTS 1317 visits were recorded. Mean number of visits per week was 18 ± 6. Mean total visit length was 60 ± 22 min, mean shaving time 15 ± 11 min, mean anesthetic application/wait time 16 ± 11 min, mean LE time 14 ± 9 min. Over the study period, average visit length has decreased, and average visits/clinic day has increased. Most delays occurred in months April, May, October-December. Delays due to patient late arrival occurred in May, July, and August of 2021, none in 2022. CONCLUSIONS LE visits have multiple components that required close coordination to ensure no clinic delays. Clinic delays spiked prior to summer and winter holidays. "Appointment tickets" provided patients with real-time visit progress tracked clinic utilization to improve the quality of pilonidal care delivery. LEVEL OF EVIDENCE Level IV.
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Affiliation(s)
- Claire Abrajano
- Division of Pediatric Surgery, Department of Surgery, Stanford University School of Medicine, Palo Alto, CA, USA
| | - Randall Inciong
- Division of Pediatric Surgery, Department of Surgery, Stanford University School of Medicine, Palo Alto, CA, USA
| | - Somin Jo
- Division of Pediatric Surgery, Department of Surgery, Stanford University School of Medicine, Palo Alto, CA, USA
| | - Deanna Garza
- Division of Pediatric Surgery, Department of Surgery, Stanford University School of Medicine, Palo Alto, CA, USA
| | - Blaine Robinson
- Division of Pediatric Surgery, Department of Surgery, Stanford University School of Medicine, Palo Alto, CA, USA
| | - Sonia Sclafani
- Division of Pediatric Surgery, Department of Surgery, Stanford University School of Medicine, Palo Alto, CA, USA
| | - Kimberly Navarro
- Division of Pediatric Surgery, Department of Surgery, Stanford University School of Medicine, Palo Alto, CA, USA
| | - Bill Chiu
- Division of Pediatric Surgery, Department of Surgery, Stanford University School of Medicine, Palo Alto, CA, USA.
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4
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Cannarozzo G, Pennati BM, Zingoni T. Trunk hair removal treatment with diode laser 810 nm in men population. Dermatol Reports 2024; 16:9736. [PMID: 38585494 PMCID: PMC10993648 DOI: 10.4081/dr.2023.9736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 08/23/2023] [Indexed: 04/09/2024] Open
Abstract
In the last years, hair removal has been one of the most common treatments performed for aesthetic purposes, especially in women. Nevertheless, even if it is less popular, the demand within men population has risen. The study aimed to assess the acceptability of the diode 810 nm treatment for hair removal on the back and chest area in men thanks to the speed of treatment and the absence of undesirable effects. For this study, 20 patients were treated for hair removal. They were men with a mean age of 30.5 (±7.3). They underwent 4 treatment sessions at 40-day intervals on the trunk (chest and back area). Patients ranged between a Fitzpatrick phototype I (20%, 4/20) to IV (15%, 3/20) (40% were type II and 25% type III). Moreover, patients were asked to report pain intensity sensation with a visual analogue scale. Overall, in the study population, a hair reduction of 80.6% (±2.8) was registered in the treated areas. The device described in this study was demonstrated to be highly efficient in extended body areas and on difficult-to-treat hair follicles like on the back and chest in the men population.
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Pezhdam P, AliAsgari M, Sadat Ansari M, Mazlumi Tutunchi N, Cheraghalian A, Nasimi M. Safety of using laser for hair removal in patients with skin diseases: a retrospective study. J COSMET LASER THER 2024; 26:31-35. [PMID: 38874021 DOI: 10.1080/14764172.2024.2367448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 06/01/2024] [Accepted: 06/10/2024] [Indexed: 06/15/2024]
Abstract
Laser hair removal is a commonly used method in dermatology which is based on selective thermolysis and utilizes the appropriate wavelength, pulse width, and energy density to damage hair follicles. Given the prevalence of skin diseases such as psoriasis, dermatitis, and vitiligo, and the increasing popularity of laser hair removal, the aim of this study was to investigate the safety of laser hair removal in individuals with skin diseases. This retrospective study was conducted at the laser department of Razi Hospital on 99 patients who underwent laser hair removal. The exacerbation of disease after laser therapy was significantly associated with active skin disease (p = .021) and laser treatment at the site of the disease (p < .001). The incidence of Koebner phenomenon was significantly associated with age (p = .017) and the number of sessions with the ND-YAG device (p = .034). It is crucial to exercise caution when performing laser treatment on individuals with active skin disease and to avoid treating the affected area were possible. If necessary, it is recommended to delay laser treatment until the disease is under control for patients with active skin disease or those who wish to receive laser treatment at the site of the disease.
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Affiliation(s)
- Pegah Pezhdam
- Faculty of medicine, Tehran University of Medical Sciences, Tehran, Iran
| | | | | | | | - Anahid Cheraghalian
- Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maryam Nasimi
- Department of Dermatology, Razi Hospital, Tehran, Iran
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Meyer PF, Maia RR, Valentim da Silva RM, de Morais Carreiro E, Farias SLQ, Malveira DH, Soares CD, Soares KFA, Serafim GMA, de Oliveira GMC, Silveira CM, Malveira KM, Mansilla BS, de Azevedo EP, de Melo LN. Effects at cellular level of epilation with various laser wavelengths applied simultaneously on different skins: two case reports. J COSMET LASER THER 2023; 25:95-101. [PMID: 38032251 DOI: 10.1080/14764172.2023.2284640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 11/13/2023] [Indexed: 12/01/2023]
Abstract
This study evaluated the effects of laser application of diverse wavelengths applied simultaneously and on different skins. The sample included two participants, a woman with light skin with abdominal hair and a woman with dark skin and hair on the inner part of the lower limbs, who received a laser therapy session. After 45 days from laser application, abdominoplasty and thigh dermolipectomy surgery were performed. In the control sample, the hair follicles were in the anagen phase, showing the presence of Bcl-2 expression. In the treated areas, follicles were observed in an advanced phase (telogen), with the presence of CK-18 and negativity of Bcl-2, highlighting the phase of hair loss at that moment and the complete apoptosis of the investigated follicle. Significant difference was observed in the comparison of the anagen phase (p = .00) and it similarly occurred in the comparison of the telogen phase (p = .00). The presence of a greater amount of follicles in the anagen phase in the control area and follicles in the telogen phase in the treated area demonstrates the efficiency of the laser at different wavelengths when reaching different skin phototypes and hair thickness, being reinforced by apoptosis and cell proliferation markers. Therefore, the hair-removal process has been optimized with various laser wavelengths.
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Affiliation(s)
- Patrícia Froes Meyer
- Department of Physiotherapy, Federal University of Rio Grande do Norte, Natal, Brazil
- Department of Physiotherapy, International Research Group (IRG), Natal, Brazil
| | - Rafaella Rêgo Maia
- Department of Physiotherapy, Federal University of Rio Grande do Norte, Natal, Brazil
| | - Rodrigo Marcel Valentim da Silva
- Department of Physiotherapy, Federal University of Rio Grande do Norte, Natal, Brazil
- Department of Physiotherapy, Estácio de Sá University, Natal, Brazil
| | | | | | | | - Ciro Dantas Soares
- Department of Pathology, University of Campinas (UNICAMP), São Paulo/SP, Brazil
| | | | | | | | | | - Karla Maia Malveira
- Faculty of Medical Sciences, University of Minas Gerais, Minas Gerais, Brazil
| | - Brenda S Mansilla
- Department of Physiotherapy, Universidad Abierta Interamericana, Argentina
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Han Y, Zhou L, Yu W, Shang Y, Qiu Y, Chen H, Jin Y, Ma G, Zou Y, Lin X. Optimal Timing of Laser Hair Removal in Expanded Forehead Flap in the Reconstruction of Facial Defects: During or After Tissue Expansion? Facial Plast Surg Aesthet Med 2023; 25:466-471. [PMID: 36459124 DOI: 10.1089/fpsam.2022.0200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Background: The optimal timing of laser epilation with expanded forehead flaps in facial defect reconstruction remains undetermined. Objective: To compare the efficacy and safety of hair removal during or after flap expansion. Methods: This prospective exploratory study included 15 (11 women and 4 men, 16.47 ± 16.331 years of age) and 26 (19 women and 7 men, 10.69 ± 10.899 years of age) patients who underwent 755 nm long-pulsed alexandrite laser epilation during flap expansion and after surgery, respectively. Facial reconstruction was performed in these patients because of congenital melanin nevus, scar or port-wine stains. Evaluation included hair reduction rate, patient satisfaction, and adverse events. Results: The median number of laser sessions for hair removal during flap expansion was significantly lower than that after surgery (2.00 vs. 3.00, p < 0.01), and the hair reduction rate was also significantly higher during flap expansion (79.5% ± 21.93% vs. 68.3% ± 17.44%, p < 0.05). No severe adverse events were reported. Conclusion: Laser hair removal is safe and efficient when performed both during flap expansion period and after surgery, but its efficacy was significantly higher, and fewer sessions were required when performed during tissue expansion. Clinical trial registration information: ChiCTR1900026090.
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Affiliation(s)
- Yue Han
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Laser and Aesthetic Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Burn and Plastic Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Lucia Zhou
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Laser and Aesthetic Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wenxin Yu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Laser and Aesthetic Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ying Shang
- Department of Laser and Aesthetic Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yajing Qiu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hui Chen
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Laser and Aesthetic Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yunbo Jin
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Gang Ma
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Laser and Aesthetic Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yun Zou
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaoxi Lin
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Laser and Aesthetic Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Mallat F, Chaaya C, Aoun M, Soutou B, Helou J. Adverse Events of Light-Assisted Hair Removal: An Updated Review. J Cutan Med Surg 2023; 27:375-387. [PMID: 37272371 DOI: 10.1177/12034754231174852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
BACKGROUND With light-assisted hair removal becoming widely used, reports of adverse effects are increasing. OBJECTIVE To review all the reported optical incidents and cutaneous complications of laser or intense pulse light-assisted hair removal. METHODS A PubMed database systematic search was performed to identify studies reporting such adverse events before July 2022 using the Mesh terms "adverse effects" AND "hair removal" AND ("laser" OR "intense pulse light"). RESULTS Altogether, 358 references were identified. After excluding duplicates, unrelated articles, guidelines, and conference abstracts, then adding references from studies bibliography, 104 publications were included. Ocular incidents consisted of anterior uveitis, iritis and iris atrophy, pupillary distortion, posterior synechiae, anterior chamber pigment, and cataracts in the anterior subcapsular region. Cutaneous complications consisted of pain, burns, folliculitis, leukotrichia, paradoxical hypertrichosis, pigmentary changes, changes in nevi, pili bigemini, herpes infection, hyperhidrosis, bromhidrosis, Fox-Fordyce disease, and frostbite from the cooling system. They were mostly correlated to skin type and body area as well as to light device and set parameters. Intense pulse light devices were found to be less painful than alexandrite laser, yet more painful than diode laser; Nd:YAG laser had the highest pain score. CONCLUSION Optical incidents can be systematically avoided. Cutaneous complications are usually related to professional errors and patient characteristics. Better knowledge of laser physics and adequate training of laser operators are key recommendations to avoid undesirable side effects. Safety recommendations help prevent most of the reported complications.
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Affiliation(s)
- Farid Mallat
- Faculté de Médecine, Université Saint-Joseph, Beirut, Lebanon
| | - Céline Chaaya
- Faculté de Médecine, Université Saint-Joseph, Beirut, Lebanon
| | - Maroun Aoun
- Faculté de Médecine, Université Saint-Joseph, Beirut, Lebanon
| | - Boutros Soutou
- Faculté de Médecine, Université Saint-Joseph, Beirut, Lebanon
- Dermatology Department, Hôtel-Dieu de France, Beirut, Lebanon
| | - Josiane Helou
- Faculté de Médecine, Université Saint-Joseph, Beirut, Lebanon
- Dermatology Department, Hôtel-Dieu de France, Beirut, Lebanon
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Kao YC, Lin DZ, Kang YN, Chang CJ, Chiu WK, Chen C. Efficacy of Laser in Hair Removal: A Network Meta-analysis. J COSMET LASER THER 2023; 25:7-19. [PMID: 37493187 DOI: 10.1080/14764172.2023.2221838] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 08/14/2022] [Accepted: 06/01/2023] [Indexed: 07/27/2023]
Abstract
BACKGROUND Laser hair removal is an increasingly prevalent trend of cosmetic procedures. The purpose of this study was to assess the effectiveness of hair reduction among several types of laser interventions. METHODS The selected studies searched in PubMed and EMBASE were assessed for quality of evidence, and extracted data on absolute hair count and hair reduction rate. Qualitative data were synthesized using standardized mean difference (SMD) in frequentist network meta-analysis because various measurement units were used among selected studies. Inconsistency and small study effects were examined by design-by-treatment interaction model and comparison-adjusted funnel plot. RESULTS A total of 13 randomized controlled trials (RCTs) (n = 652) were contributed to network meta-analysis. Pooled results revealed that diode laser showed significantly lower absolute hair count within three-month (SMD = -13.21, 95% confidence interval [CI]: -22.25 to -4.17) and around six months follow-up (SMD = -11.01, 95% CI: -18.24 to -3.77) as compared with those in control group, but no significant difference among laser interventions. All side effects observed were transient without leaving any permanent scars. CONCLUSION Eliminating unwanted hair with lasers or intense pulsed light is safe and effective; however, which type of intervention is more beneficial in the long-term process should be studied with a longer follow-up time.
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Affiliation(s)
- Yu-Chien Kao
- School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Division of Obstetrics and Gynecology, Cheng Hsin General Hospital, Taipei, Taiwan
| | - Dai-Zhu Lin
- School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Department of Surgery, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
| | - Yi-No Kang
- Center for Evidence-Based Medicine, Taipei Medical University Hospital, Taipei, Taiwan
- Evidence-Based Medicine Center, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
- Research Center of Big Data and Meta-Analysis Center, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
- Cochrane Taiwan, Taipei Medical University, Taipei, Taiwan
- Institute of Health Policy & Management, College of Public Health, National Taiwan University, Taipei, Taiwan
| | - Cheng-Jen Chang
- Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Division of Plastic Surgery, Department of Surgery, Taipei Medical University Hospital, Taipei, Taiwan
| | - Wen-Kuan Chiu
- Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Division of Plastic Surgery, Department of Surgery, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
| | - Chiehfeng Chen
- Evidence-Based Medicine Center, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
- Cochrane Taiwan, Taipei Medical University, Taipei, Taiwan
- Division of Plastic Surgery, Department of Surgery, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
- Department of Public Health, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
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10
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Imagawa K, Kono T, Komaba C, Yamamoto S, Tsunoda Y, Nemoto H, Hanai U, Groff WF, Akamatsu T. Mechanism of crescent-shaped and ring-shaped epidermal damage from laser hair removal with cryogen spray cooling. Lasers Med Sci 2022; 37:3613-3619. [PMID: 36048276 DOI: 10.1007/s10103-022-03640-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 08/22/2022] [Indexed: 10/14/2022]
Abstract
The safety and efficacy of laser hair removal have been well established through many clinical studies and through clinical use over the past 25 years. A laser hair removal device that protects the epidermis by utilizing cryogen spray cooling (CSC) is widely used internationally. In darker skin types, post-inflammatory hyperpigmentation (PIH) can occur after laser hair removal. In particular, laser hair removal with CSC is known to cause crescent-shaped or ring-shaped PIH. In this experiment, we report a visualization of this PIH mechanism. The laser used in this experiment is a 755-nm-long-pulsed alexandrite laser. Graph paper was treated with this laser to assess for thermal damage. We investigated changes in thermal damage due to differences in laser spot size, fluence output, and laser beam angle in relation to the graph paper. When using a spot size of 18 mm, we observed that higher fluences caused crescent-shaped thermal damage on the margins of the treated graph paper. It was also confirmed that when the hand piece is not held perpendicular to the skin, the laser-treated area is expanded and the CSC range is narrowed. These factors caused the area of thermal damage to widen. This widening causes ring-shaped thermal injury, leading to PIH. We treated graph paper using a hair removal laser with CSC to investigate the mechanism of crescent or ring-shaped thermal damage. Laser treatment on graph paper is effective as a test for defects in the CSC device. Factors that cause inadequate cooling, which leads to PIH, are large spot size, high fluence, not holding the laser hand piece perpendicular to the skin, and malfunctioning of CSC device.
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Affiliation(s)
- Kotaro Imagawa
- Department of Plastic Surgery, Tokai University, Kanagawa, Japan.
| | - Taro Kono
- Department of Plastic Surgery, Tokai University, Kanagawa, Japan
| | - Chieko Komaba
- Department of Plastic Surgery, Tokai University, Kanagawa, Japan
| | - Satoru Yamamoto
- Department of Plastic Surgery, Tokai University, Kanagawa, Japan
| | - Yotaro Tsunoda
- Department of Plastic Surgery, Tokai University, Kanagawa, Japan
| | - Hitoshi Nemoto
- Department of Plastic Surgery, Tokai University, Kanagawa, Japan
| | - Ushio Hanai
- Department of Plastic Surgery, Tokai University, Kanagawa, Japan
| | | | - Tadashi Akamatsu
- Department of Plastic Surgery, Tokai University, Kanagawa, Japan
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11
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Sarigul Guduk S, Tukenmez Demirci G. Safety of Laser Hair Removal in Patients Receiving Systemic Isotretinoin for Acne Vulgaris. Dermatol Surg 2021; 47:1448-1452. [PMID: 34537789 DOI: 10.1097/dss.0000000000003185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND A few reports on scar and keloid formation in patients receiving systemic isotretinoin have encouraged a conservative approach in which laser procedures are delayed during and 6 to 12 months after the completion of treatment. OBJECTIVE To assess the safety of laser hair removal with alexandrite, diode, and Nd:YAG lasers in patients receiving systemic isotretinoin treatment. MATERIALS AND METHODS Fifty-two patients who underwent laser hair removal during isotretinoin treatment were retrospectively analyzed and compared with a control group for side effects. RESULTS There were 48 female and 4 male patients. The average isotretinoin dose was 33.7 mg/d. The average interval between the start of isotretinoin treatment and the first laser hair removal was 39.3 days. The mean number of sessions under treatment was 4.1. Three patients had temporary crusting, and 1 patient had a small area of temporary hypopigmentation. Five (9.6%) patients in the control group had crusting. The incidence of side effects was not significantly different between the 2 groups (p > .05). Neither patients in the isotretinoin group nor those in the control group experienced blistering, pigmentation, ulceration, and scar or keloid formation. CONCLUSION Laser hair removal is a safe procedure with alexandrite, diode, and Nd:YAG lasers in patients receiving systemic isotretinoin.
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Affiliation(s)
- Sukran Sarigul Guduk
- Dr. Sukran Sarigul Guduk Dermatology Clinic, Istanbul, Turkey
- Department of Dermatology, School of Medicine, Haliç University, Istanbul, Turkey
| | - Gulsen Tukenmez Demirci
- Department of Dermatology, School of Medicine, Acibadem Mehmet Ali Aydinlar University, Istanbul, Turkey
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12
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Paradoxical Hypertrichosis Associated with Laser and Light Therapy for Hair Removal: A Systematic Review and Meta-analysis. Am J Clin Dermatol 2021; 22:615-624. [PMID: 34057666 DOI: 10.1007/s40257-021-00611-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/16/2021] [Indexed: 10/21/2022]
Abstract
BACKGROUND Paradoxical hypertrichosis (PH) is an uncommon, poorly understood adverse effect associated with laser or intense pulsed light treatment for hair removal. OBJECTIVE The objective of this study was to conduct a systematic review and meta-analysis to determine PH prevalence and associated risk factors. METHODS We conducted a systematic review and meta-analysis of studies evaluating hair removal with lasers or intense pulsed light. Primary outcome was PH prevalence. Meta-regression and subgroup analysis were used to investigate associations among treatment modality, patients' characteristics, and PH. RESULTS Included were 9733 patients in two randomized controlled trials and 20 cohort studies (three prospective and 17 retrospective). Pooled PH prevalence was 3% (95% confidence interval 1-6; I2 = 97%). Paradoxical hypertrichosis was associated with a face or neck anatomic location, and occurred in only 0.08% of non-facial/neck cases. Treatment modality and interval between treatments had no effect on the PH rate. There were insufficient data to determine the association between sex and skin type to PH. In three out of four studies, PH gradually improved with continued therapy. CONCLUSIONS Based primarily on cohort studies, PH occurs in 3% of patients undergoing hair removal with lasers or intense pulsed light, yet rarely outside the facial/neck areas. Treatment modality does not seem to be a contributing factor. Continuation of treatment in areas with PH may be the most appropriate treatment.
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13
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Naranjo García P, López Andrino R, Gómez González C, Pinto H. Three wavelengths integrated: Efficacy and safety of a novel combination for hair removal. J Cosmet Dermatol 2021; 21:259-267. [PMID: 34418269 DOI: 10.1111/jocd.14371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 07/02/2021] [Indexed: 11/30/2022]
Abstract
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.
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Affiliation(s)
| | | | | | - Hernán Pinto
- i2e3Biomedical Research Institute, Barcelona, Spain
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14
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Tugba Altunel C, Pelin Kartal S. Reconceptualizing the permanence of alexandrite laser hair removal results: a long-term follow-up study. J COSMET LASER THER 2021; 22:271-274. [PMID: 34096438 DOI: 10.1080/14764172.2021.1936067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Background: The permanence of Alexandrite laser hair removal (LHR) has been of great interest. However, studies on long-term outcome are lacking.Objective: To evaluate the hair reduction rates (HRRs) and laser parameters of patients who no longer need epilation after LHR, and redefine permanence.Patients & Methods: Out of 183, 100 patients who discontinue epilation at least 2 years after LHR were included in the study. Self-perceived HRRs and patient satisfaction were recorded through patient questionnaires. The correlations between HRRs and treatment parameters, and the presence of polycystic ovary syndrome (PCOS) were assessed.Results: Treatment sites were the face, legs, trunk, arm and bikini regions. Twenty-one patients had PCOS. The means of results (in range) were as follows; HRRs [56.28% (±19.73) and 67.74% (±16.42)]; the session numbers [5.52 (±2.50) and 9.80 (±4.15)] and, the treatment durations [62.2 (±40.0) and 90.0 (±45.9) weeks]. All patients stated they no longer require epilation since the remaining hairs were too thin to be noticed.Conclusion: Our results demonstrate that, even in the presence of PCOS, hair reduction together with thinning satisfy patients without total removal of hairs. Therefore, the elimination of the need for epilation might be considered as the 'permanent result' of LHR.
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Affiliation(s)
| | - Selda Pelin Kartal
- Department of Dermatology, University of Health Sciences Turkey, Ankara Diskapi Education and Research Hospital, Ankara, Turkey
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15
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Wang Z, Ke C, Yang M, Lai M, Qi N, Ke Y. Analysis of the Curative Effect of Alexandrite Laser in the Treatment of Venous Lake of Lips. Lasers Surg Med 2020; 53:922-925. [PMID: 33238044 DOI: 10.1002/lsm.23359] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 11/05/2020] [Accepted: 11/09/2020] [Indexed: 01/09/2023]
Abstract
BACKGROUND AND OBJECTIVES Laser is being widely used in clinical treatment nowadays, including 755 nm Alexandrite laser [1,2]. This study was conducted to examine the clinical outcome of long-pulse 755 nm Alexandrite laser in the treatment of venous lake of the lip. STUDY DESIGN/MATERIALS AND METHODS Forty-one patients (2015-2019) were reviewed. The clinical outcomes were assessed 1 month after the treatment. The efficacy of the treatment was classified into four categories: basic recovery (most optimal outcome), effective, improvement, and ineffective (least favorable outcome). Adverse reactions were also recorded. RESULTS Thirty-three (80.49%) patients achieved basic recovery and 8 (19.51%) were effective; 29 (70.73%) recovered after receiving one treatment, 3 (7.32%) recovered after receiving two treatments, and 1 (2.44%) recovered after three treatments. CONCLUSION Long-pulse 755 nm Alexandrite laser is an effective treatment for the venous lake of the lip. Lasers Surg. Med. © 2020 Wiley Periodicals LLC.
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Affiliation(s)
- Zhihan Wang
- Department of Cosmetology, Wenzhou Hospital of Integrated Traditional Chinese and Western Medicine, Wenzhou, Zhejiang, 325000, China
| | - Chen Ke
- Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China
| | - Ming Yang
- Department of Cosmetology, Wenzhou Hospital of Integrated Traditional Chinese and Western Medicine, Wenzhou, Zhejiang, 325000, China
| | - Min Lai
- Department of Cosmetology, Wenzhou Hospital of Integrated Traditional Chinese and Western Medicine, Wenzhou, Zhejiang, 325000, China
| | - Nian Qi
- Department of Cosmetology, Wenzhou Hospital of Integrated Traditional Chinese and Western Medicine, Wenzhou, Zhejiang, 325000, China
| | - Youhui Ke
- Department of Cosmetology, Wenzhou Hospital of Integrated Traditional Chinese and Western Medicine, Wenzhou, Zhejiang, 325000, China
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16
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Bonan P, Troiano M, Verdelli A. Safety and efficacy of single pass vs
multipass
emission with 755 alexandrite laser for
all‐skin‐type
hair removal: A pilot study. Dermatol Ther 2020; 33:e14001. [DOI: 10.1111/dth.14001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 06/23/2020] [Indexed: 12/01/2022]
Affiliation(s)
- Paolo Bonan
- Laser Cutaneous Cosmetic & Plastic Surgery Unit Villa Donatello Clinic Florence Italy
| | - Michela Troiano
- Laser Cutaneous Cosmetic & Plastic Surgery Unit Villa Donatello Clinic Florence Italy
| | - Alice Verdelli
- Laser Cutaneous Cosmetic & Plastic Surgery Unit Villa Donatello Clinic Florence Italy
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17
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Tanghetti E. LSM Dermatology Edition: Introduction 2020. Lasers Surg Med 2019; 52:5-6. [PMID: 31792996 DOI: 10.1002/lsm.23195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/18/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Emil Tanghetti
- Center for Dermatology and Laser Surgery, Dermatology, 5601 J Street, Sacramento, California, 95819
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