June 2026 in “Journal of Clinical Medicine” This study reported that a single-session scalp procedure combining several components, including PRP and botulinum toxin, was associated with significant improvements in hair thickness and reduced vellus hair proportion in androgenetic alopecia patients, although further controlled trials are needed to establish causation.
July 2025 in “Actas Dermo-Sifiliográficas” This study found that a single session of botulinum toxin, whether administered subcutaneously or combined intramuscularly and subcutaneously, did not significantly improve hair density or hair quality in men with androgenetic alopecia after six months.
November 2024 in “Journal of Clinical Medicine” This study observed that six sessions of injections using a stabilized hyaluronic acid compound improved hair thickness, shine, density, and reduced hair loss in volunteers with moderate androgenetic alopecia, with excellent treatment tolerability and high satisfaction reported by 88.5% of participants.
May 2024 in “Journal of Cosmetic and Laser Therapy” This study found that three sessions of injectable platelet-rich fibrin (i-PRF+) significantly improved hair follicle density, hair volume, and thickness, as well as patient satisfaction in women with female pattern hair loss, with only minor self-limited adverse effects reported.
October 2021 in “QJM: An International Journal of Medicine” This study found that four sessions of Intense Pulsed Light treatment significantly improved signs of photodamaged skin in adult female patients, as demonstrated by patient satisfaction and 3D camera assessments.
July 2019 in “International Society of Hair Restoration Surgery” This course overview discusses educational sessions on hair restoration surgery and FUE techniques and reports no new research findings.
10 citations
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July 2021 in “Clinical Cosmetic and Investigational Dermatology” This study found that combining weekly transverse needling sessions with mini-punch grafting significantly accelerated and enhanced repigmentation in stable, resistant non-segmental vitiligo lesions compared to each procedure alone or non-procedural treatment.
3 citations
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April 2020 in “British Journal of Dermatology” PRP treatment helps 70.1% of hair loss patients after two sessions.
July 2026 in “Innovations in Pharmaceutical Sciences & Care” In this case report, a 31-year-old man with frontal hairline recession saw a marked improvement in hair density and scalp appearance after undergoing six mesotherapy sessions alongside twice-daily application of 5% minoxidil, attributed to the treatment protocol combining nutrients, bioactives, and topical minoxidil.
In this study, 14 sessions of 675 nm laser stimulation significantly improved hair count, density, and thickness in Indian patients with androgenetic alopecia, with an increase of around 17% in hair parameters over four months.
April 2024 in “Skin research and technology” This study found that combining a single SVF injection with PRP sessions did not significantly enhance hair growth outcomes compared to PRP injections alone in patients with androgenetic alopecia.
Hair transplants can effectively treat hair loss but may need multiple sessions for full results.
17 citations
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February 2018 in “Journal of Cosmetic and Laser Therapy” In this study, researchers administered eight sessions of intradermal injections containing growth factors into the scalp of 1000 patients, reporting a significant reduction in hair fall in 83% of participants and increased total hair count and shaft diameter, with promising tolerance and safety.
11 citations
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January 2014 in “PubMed” This study found that patients with high androgen levels due to PCOS required more sessions of Nd-YAG laser therapy for hair reduction compared to those with normal or low hormone levels.
9 citations
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December 2015 in “Journal of Dermatological Case Reports” A 12-year-old with ichthyosis linearis circumflexa showed significant improvement after 30 sessions of narrowband UVB phototherapy, as reported in this case study.
2 citations
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August 2020 in “Dermatologic Therapy” This study found that increasing energy fluence, session duration, and using pulsed irradiation significantly enhance hair regrowth in androgenetic alopecia when using low-level laser therapy, while the number of diodes does not affect outcomes.
1 citations
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October 2022 in “European medical journal” This summary reports that the 31st EADV Congress in Milan featured over 170 sessions with more than 600 speakers, offering dermatology and venereology professionals a platform to innovate practices and enhance patient care through global collaboration.
1 citations
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January 2017 in “Journal of Aesthetic & Reconstructive Surgery” This study found that combining strip harvest surgery and follicular unit extraction in one session increased the total number of hair grafts harvested, leading to patient satisfaction.
June 2025 in “Revista Brasileira de Fisioterapia Pelvica” In this case report, four sessions of the Broad Ligament Maneuver were associated with improvements in ovarian function and regression of PCOS symptoms, including normalizing menstrual flow and decreasing hirsutism.
March 2025 in “Salud Ciencia y Tecnología” This study found that patients with androgenetic alopecia were generally satisfied after receiving six sessions of PRP mesotherapy combined with nocturnal minoxidil 5% application.
January 2022 in “Cellular and Molecular Biology” This study found that adding Triamcinolone to the local anesthetic solution and administering PRP sessions significantly improved hair transplantation outcomes, with gene expression indicating SRD5A2's role in transplant success.
June 1997 in “The American Journal of Cosmetic Surgery” This article discusses two donor site reharvesting methods that may allow further hair restoration sessions and improve donor scar aesthetics but reports no new clinical results.
16 citations
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May 2004 in “Hair transplant forum international” This article describes efforts in the field of hair restoration to achieve complete results in fewer sessions, but it does not report new clinical outcomes.
6 citations
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September 2019 in “Journal of Cosmetic Dermatology” In this study, patients with androgenic alopecia who underwent 10 sessions of 1540-nm fractional erbium glass laser treatment over 5 months experienced significant improvements in hair density and thickness, with no major safety concerns reported.
5 citations
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January 2018 in “Annals of Dermatology” A 308 nm excimer laser successfully treated a boy with a rare skin condition after about a year of weekly sessions.
4 citations
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January 2018 in “Urology & Nephrology Open Access Journal” This case report details an instance of acute kidney injury following the inhalation of hair dye during a hairstyle session.
1 citations
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August 2022 in “Journal of Drugs in Dermatology” This study found that the efficacy of platelet-rich plasma in treating androgenetic alopecia is higher with increased frequency of sessions, chemically-activated PRP, double centrifugation, and whole-head application, among younger and female patients.
1 citations
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August 2018 in “Anais Brasileiros de Dermatologia” This study found that facial threading decreased skin roughness and improved subjective assessments of skin smoothness and color after three sessions.
April 2026 in “Brazilian Journal of Hair Health” In this case report, a 36-year-old male with androgenetic alopecia showed clinically visible improvement in hair density after three monthly sessions of microneedling combined with exosome application, although the authors note that further studies are needed to verify these findings.
January 2026 in “Ciencia Latina Revista Científica Multidisciplinar” This study reports on a 14-year-old male with refractory diffuse alopecia areata who achieved full hair density restoration after three monthly sessions of microneedling combined with triamcinolone, dutasteride, and synthetic exosome treatment, highlighting exosomes' potential for enhancing traditional therapies in autoimmune hair loss cases.