10 citations
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August 2019 in “The World Journal of Men's Health” This study found that administering a kimchi and cheonggukjang probiotic product promoted hair growth and increased hair thickness in individuals with patterned hair loss without causing adverse effects.
3 citations
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December 2020 in “Journal of Cosmetic Dermatology” This study reported that autologous whole fat injection in the scalp considerably increased hair growth in patients with androgenetic alopecia.
2 citations
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November 2024 in “Clinical Cosmetic and Investigational Dermatology” This Mendelian randomization study suggests a causal link between higher BMI and increased risk of psoriasis, atopic dermatitis, and hidradenitis suppurativa, potentially due to elevated biomarkers such as triglycerides and C-reactive protein.
2 citations
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January 2010 In this study, the researchers found that an increased number of hairs less than 40 microns in diameter per cm² was associated with androgenic alopecia in both men and women.
1 citations
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January 2019 in “Journal of the Egyptian Women's Dermatologic Society (Print)” This study observed that while both minoxidil and botanically-derived 5-alpha reductase inhibitors significantly increased hair count and diameter in women with female pattern hair loss, minoxidil was more effective, especially for greater hair diameter increases, but had more troublesome side effects.
September 2025 in “Dermatologic Surgery” This study found that combining Fractional Microneedling Radiofrequency (FMRF) with topical minoxidil significantly increased hair counts and density more than minoxidil alone or combined with Fractional CO2 in women with androgenic alopecia.
April 2022 in “UNESP Institutional Repository (São Paulo State University)” This study found that the combination of topical minoxidil and oral biotin significantly increased hair growth speed and density in healthy men, while neither intervention alone had a significant effect.
September 2019 in “Journal of Investigative Dermatology” This clinical trial reported that Sandalore® 1% significantly reduced hair shedding and increased hair volume and anagen HFs in women with telogen effluvium compared to placebo, supporting its potential use in hair growth treatments.
April 2017 in “Journal of Investigative Dermatology” This study found that the PON1 192 R allele was associated with an increased risk of psoriasis and altered lipid profiles in patients from Western Mexico.
October 2025 in “Brazilian Journal of Case Reports” This case report suggests that combining platelet-rich plasma therapy with mesotherapy may effectively increase hair density and improve scalp health in complex cases of androgenetic alopecia.
June 2023 in “Hanguk ingeurie hakoeji” This study found that consuming a fermented protein mixture for 60 days may increase hair density in healthy adults, although it did not significantly change other scalp or hair conditions like thickness, pore condition, or blood vessel exposure.
3 citations
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September 2021 in “EClinicalMedicine” In this study, ALRV5XR treatment significantly increased terminal hair density in men with androgenetic alopecia after 24 weeks, while also decreasing vellus hair density, and was well tolerated without adverse events, suggesting its potential efficacy over standard therapies.
May 2024 in “Brazilian Journal of Hair Health” In this study, both red and blue light phototherapy were found to increase hair density, reduce the central parting, and boost the number of terminal hairs in individuals with Androgenetic Alopecia, over 12 weeks of treatment.
45 citations
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December 2018 in “Lasers in Medical Science” In a 24-week randomized trial, this study found that the RAMACAP laser helmet significantly increased hair density and diameter in androgenetic alopecia patients compared to a sham device, although limitations included a small sample size and potential issues with the control used.
43 citations
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July 1984 in “Clinical and Experimental Dermatology” This study found that women with common baldness treated with cyclical antiandrogen therapy for 52 weeks experienced increased hair density and a higher percentage of hairs in the anagen growth phase.
24 citations
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November 2017 in “Aesthetic Plastic Surgery” In this study, researchers found that homologous PRP (h-PRP) significantly increased hair density more than both nonactivated (n-PRP) and activated (a-PRP) autologous PRP in patients with androgenetic alopecia, suggesting h-PRP as a potentially more effective treatment option for hair loss.
23 citations
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June 2021 in “Lasers in Medical Science” In this study, blue light therapy at a specific wavelength increased hair density and shaft width in 90% of patients with androgenetic alopecia after 10 weeks.
10 citations
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August 2020 in “Dermatologic Surgery” In this study, human ADSC-CM treatment following nonablative fractional laser significantly increased hair density and volume in patients with androgenetic alopecia without any reported adverse effects.
8 citations
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July 2020 in “Medicine” In this study, low-level light therapy using a new helmet-type device significantly increased hair density and thickness in patients with androgenetic alopecia, showing no adverse events or side effects, suggesting it may be a safe and effective treatment option for both sexes.
6 citations
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June 2021 in “EClinicalMedicine” In this study, ALRV5XR significantly increased hair regrowth in women with androgenetic alopecia or telogen effluvium, with no adverse events reported.
4 citations
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December 2021 in “Applied sciences” This study observed that a combination of micro-needling and low-level light/laser therapy significantly increased hair density in patients with mild to moderate androgenic alopecia, showing an increase of 12 hairs/cm² after 16 weeks, compared to baseline.
3 citations
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October 2018 in “Skin appendage disorders” In this study, Spectral DNC-N® significantly reduced hair shedding and increased hair mass and density in women with early female pattern hair loss, with effects evident after 3 months and sustained through 6 months.
3 citations
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December 2015 in “Asian journal of dermatology” This study reports that applying Natural Plant Extracts containing sweet flag significantly reduced hair loss and increased hair density and thickness in people with alopecia over 10 months.
2 citations
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August 2024 in “International Journal of Dermatology” This study found that treating patients with androgenetic alopecia using exosomes from adipose tissue stem cells over 24 weeks significantly increased hair density and patient satisfaction without severe adverse effects, suggesting a promising alternative treatment for hair loss.
2 citations
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May 2019 in “PubMed” This study on rats found that finasteride and dutasteride increased collagen density in penile tissues and caused changes in prostate cells, but did not significantly alter erectile pressures compared to controls.
1 citations
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January 2016 in “Hair therapy & transplantation” In this study, male participants with early androgenetic alopecia experienced a significant increase in hair growth rate after applying topical lipoid cepharanthine lotion for six months.
1 citations
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January 1997 in “Journal of Investigative Dermatology” In this study using a macaque model, RU58841 at a 5% concentration significantly increased hair density, thickness, and length in the frontal bald scalp over six months.
June 2026 in “Brazilian Journal of Hair Health” In this case report, combining iontophoresis with exosomes was associated with increased hair density, improved hair quality, and reduced scalp inflammation in patients with female androgenetic alopecia.
January 2026 in “Journal of Community Medicine and Health Solutions” In this study, the novel topical agent PP405 showed favorable tolerability and increased hair density by over 20% in men with advanced androgenetic alopecia after eight weeks, suggesting a promising potential treatment pending further trials.
January 2026 in “Dermatologic Therapy” In this systematic review and meta‐analysis, botulinum toxin monotherapy was found to significantly increase hair density in patients with androgenetic alopecia, with optimal effects observed using a 100-unit dose every six months. These findings suggest potential efficacy but should be confirmed in larger, placebo-controlled trials.