22 citations
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March 2020 in “Journal of The American Academy of Dermatology” This study found that injecting autologous dermal sheath cup cells significantly increased hair density and diameter in male and female pattern hair loss compared to a placebo for up to 9 months.
21 citations
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January 2019 in “Lasers in Medical Science” This review found that low-level laser therapy significantly increased hair density in adults with androgenic alopecia compared to sham treatments, with greater effects observed at lower treatment frequencies.
18 citations
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August 2019 in “Journal of Cosmetic Dermatology” This study found that autologous platelet-rich plasma was associated with increased hair density in people with pattern hair loss, but with considerable variability and unclear risks of bias.
11 citations
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January 2020 in “Journal of Drugs in Dermatology” This study found that intralesional triamcinolone acetonide injections effectively increased hair density in African American women with traction alopecia, showing promise as a safe treatment option.
10 citations
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August 2020 in “Dermatologic Therapy” This study found that platelet-rich plasma significantly increased hair diameter in both men and women with androgenetic alopecia but improved hair density only in men.
9 citations
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September 2019 in “Journal of Cosmetic Dermatology” This study found that platelet-rich plasma injections significantly increased hair density in men with androgenetic alopecia compared to placebo, but further research is needed to understand factors influencing treatment success.
7 citations
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February 2022 in “Journal of Personalized Medicine” This meta-analysis found that platelet-rich plasma treatments significantly increased hair density in patients with androgenic alopecia, with results influenced by treatment frequency and patient age.
6 citations
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November 2017 in “Skin appendage disorders” This study found that a new topical botanical lotion significantly increased hair density and improved quality of life in women with androgenetic alopecia over 24 weeks.
4 citations
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October 2019 in “Skin appendage disorders” This study found that autologous activated PRP injections significantly increased hair density in patients with androgenetic alopecia, with patients reporting high satisfaction and few side effects.
3 citations
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December 2018 in “International Journal of Biomedicine” This study found that treating androgenetic alopecia with platelet rich plasma increased hair density and diameter while decreasing the proportion of telogen and vellus hairs.
2 citations
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May 2022 in “Journal of trace elements in medicine and biology” This study found that administering lower doses of sodium pentaborate pentahydrate increased hair growth in rats via specific molecular pathways, while a higher dose suppressed these pathways and impaired hair growth.
2 citations
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October 2020 in “Dermatologic Therapy” This study found that a topical herbal solution significantly increased hair diameter and density in men with androgenetic alopecia compared to minoxidil after 36 weeks of treatment.
1 citations
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October 2023 in “Journal of plastic, reconstructive & aesthetic surgery” This meta-analysis reported that stem cell-derived conditioned medium effectively increases hair density and thickness in patients with alopecia, with longer treatment durations showing greater improvements.
1 citations
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October 2020 in “Journal of Investigative Dermatology Symposium Proceedings” This study found that platelet-rich plasma treatment increased hair density and reduced inflammation in patients with patchy alopecia areata, but not in a patient with alopecia universalis.
1 citations
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August 2018 in “Madridge journal of dermatology & research” This study observed that the Pilogics Hairegen device increased total hair count by 23.2% and terminal hair count by 21.1% in 289 patients with androgenetic alopecia after approximately 20 weeks of use, with no adverse effects reported.
February 2026 in “Dermatology Reports” This review found that Rosmarinus officinalis (rosemary) leaf extract significantly increased hair density and thickness in patients with androgenetic alopecia, suggesting it may be a promising natural alternative for hair loss treatment with fewer side effects than conventional therapies.
February 2026 in “PubMed” This study observed that while hair density generally increased after PRP-based treatments for nonscarring alopecia, the extent of improvement and associated biomarker changes varied widely among individuals.
July 2025 in “Biomolecules” This systematic review found that topical adenosine may increase hair thickness and density while reducing hair loss, but the strength of evidence is low due to issues with trial design and sample size.
December 2024 in “Dermatologic Surgery” This study observed that pooled analysis of LED caps increased hair density in patients with androgenetic alopecia compared to sham, achieving 28.5 more hairs per cm².
June 2024 in “Saudi Journal of Medicine” This study found that platelet-rich plasma therapy significantly increased hair diameter and density in male androgenetic alopecia patients over six months, particularly in those with AGA durations up to five years.
April 2024 in “Archiv EuroMedica” This study found that platelet-rich plasma therapy increased hair density in androgenetic alopecia and improved hair regrowth in chronic plaque alopecia, with better results when combined with minoxidil rather than finasteride.
September 2023 in “Medical & Clinical Case Reports Journal” This review found that while platelet-rich plasma treatment significantly increased hair density compared to baseline in people with androgenetic alopecia, its effectiveness was not significant compared to placebo in most studies.
This meta-analysis found that platelet-rich plasma therapy significantly increased hair density in androgenic alopecia, with stand-alone PRP showing notable improvements, but the benefits of combining PRP with other therapies remain uncertain.
April 2023 in “Acta Poloniae Pharmaceutica” This study found that using Urtica cannabina extract shampoo led to increased levels of copper, zinc, and iodine in the scalp hair of Mongolian women, along with improvements in hair growth, diameter, and density compared to a regular shampoo.
January 2020 in “대한피부과학회지” This study found that oral dutasteride increased hair density but not thickness in female-pattern hair loss patients, suggesting a potential mechanism involving β-catenin activity.
March 2019 in “The International Journal of Advanced Smart Convergence” This study found that topical radish saponin significantly increased hair density and follicle formation in nude mice predisposed to pattern balding.
April 2023 in “Journal of Investigative Dermatology” This study found that the ENERGI-F701 solution significantly increased hair density and reduced hair shedding in women with female pattern hair loss, with fewer local skin reactions compared to Regaine® 2% minoxidil, suggesting its effectiveness and safety as a treatment option.
December 2020 in “Actas Dermo-Sifiliográficas” This review reports that low-level laser therapy significantly increased hair density in androgenetic alopecia patients compared to a sham treatment, with variations in effectiveness based on treatment intensity and duration.
October 2020 in “Medical journal of Tabriz University of Medical Sciences and Health Services” This study found that platelet-rich plasma significantly increased hair density in patients with androgenic alopecia after three months of treatment.
July 2020 in “Journal of Cosmetic and Laser Therapy” This study found that platelet-rich plasma injections significantly increased hair density and width while improving patient satisfaction in androgenic alopecia treatment without adverse effects.