December 2022 in “Archives of Dermatological Research” This study found that topical cetirizine increased hair shaft thickness and improved clinical outcomes from the patients' perspective in female androgenetic alopecia compared to minoxidil alone, with similar side effect profiles.
306 citations
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August 2011 in “Journal of cachexia, sarcopenia and muscle” This study found that GTx-024 significantly increased total lean body mass and improved physical function in healthy elderly men and postmenopausal women, suggesting potential use for muscle wasting conditions.
53 citations
,
March 2006 in “Biopolymers” This study suggests that increased amounts of less stable disulfide conformers in hair shafts may be linked to the brittleness observed in trichothiodystrophy.
43 citations
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November 1992 in “International Journal of Dermatology” This study found that minoxidil 2% increased nonvellus hair counts in women with female androgenetic alopecia without causing serious side effects, compared to a placebo.
20 citations
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September 2016 in “Indian Journal of Dermatology, Venereology and Leprology” Platelet-rich plasma treatment significantly increased hair diameter and density, stopped hair fall, and boosted hair growth in men with hair loss, with no reported side effects.
8 citations
,
March 2020 in “Aesthetic Plastic Surgery” Finasteride and minoxidil together safely and effectively increase hair growth and density for androgenetic alopecia.
5 citations
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January 2017 in “Laboratory Animal Research” This study observed that gold thread implantation increased hair regrowth in both human patients and mice, suggesting it could be an effective hair regrowth treatment, although further studies are needed to understand its mechanisms and safety.
1 citations
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December 2020 in “Medical lasers” The laser therapy device effectively increased hair growth in people with androgenetic alopecia.
1 citations
,
January 2016 in “Journal of stem cell research and medicine” Fat-derived stem cell therapies can potentially increase hair growth and thickness in people with hair loss.
1 citations
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January 2016 in “Journal of stem cell research and medicine” Fat-derived stem cell therapies can potentially increase hair growth and thickness in people with hair loss.
January 2018 in “journal of applied pharmaceutical science” Biomimetic peptides improved hair growth and increased growth factors in hair follicles for hair loss patients.
July 1989 in “British Journal of Dermatology” Minoxidil helps increase hair growth and density in people with hair loss, with higher concentrations giving better results.
July 2019 in “Dermatología Cosmética, Médica y Quirúrgica” This study found that dutasteride mesotherapy increased the diameter of existing hair in five Mexican men with androgenetic alopecia, without reported side effects.
September 2016 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” Once-daily 5% minoxidil foam increases hair regrowth and density in women with hair loss, but not as effectively as twice-daily 2% minoxidil solution, though it's safer and more convenient.
2 citations
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October 2014 in “International Journal of Trichology” Low-level laser therapy may increase hair density in pattern hair loss.
June 2025 in “Electronic Journal of General Medicine” This review suggests that melatonin may increase hair density and reduce hair shedding, but variations in study designs highlight the need for more standardized clinical trials.
36 citations
,
December 2012 in “Dermatologic Surgery” Injecting platelet-rich plasma (PRP) can increase hair growth rate and density in male pattern baldness.
October 2024 in “Actas Dermo-Sifiliográficas” Finasteride and dutasteride can increase beard thickness in men.
July 2025 in “Clinical Dermatology Review” This study found that platelet-rich plasma therapy led to significantly increased hair growth and density compared to placebo in patients with androgenic alopecia over six months.
214 citations
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September 2015 in “Stem Cells Translational Medicine” This study found that platelet-rich plasma injections significantly increased hair count and density in patients with male pattern hair loss without major side effects, suggesting it may be a safe and effective treatment option.
183 citations
,
January 2014 in “BioMed Research International” This study reported that AA-PRP injections significantly increased hair count and density in individuals with pattern hair loss compared to baseline, demonstrating their potential for enhancing hair growth.
136 citations
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April 2016 in “Dermatologic Surgery” This study found that platelet-rich plasma significantly increased hair density and anagen hair proportions in androgenetic alopecia patients, suggesting potential as an adjuvant therapy.
83 citations
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March 2015 in “International Journal of Dermatology” This retrospective study found that adipose-derived stem cell-conditioned media increased hair density and thickness in women with female pattern hair loss over 12 weeks, with no severe adverse effects reported.
69 citations
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April 2019 in “Biomedicines” This study found that hair thickness and density increased after treatment with human follicle mesenchymal stem cells and platelet rich plasma, associated with enhanced Wnt signaling and platelet derived growth factors.
64 citations
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June 2010 in “Journal of The European Academy of Dermatology and Venereology” This study suggests that 5 mg/day oral finasteride may increase hair density and thickness in normoandrogenic Asian women with female pattern hair loss over 12 months.
56 citations
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April 2007 in “Journal der Deutschen Dermatologischen Gesellschaft” This study found that 12 months of minoxidil treatment increased hair density and thickness in women with androgenetic alopecia, while alfatradiol primarily stabilized hair loss.
39 citations
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March 2019 in “Dermatologic Surgery” This study's meta-analysis reported that PRP injections significantly increased hair density compared to baseline and placebo in androgenetic alopecia patients, supporting its use as a beneficial treatment.
33 citations
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July 2020 in “Journal of The American Academy of Dermatology” In this study, PRP increased hair density in areas treated for androgenetic alopecia, but there was no significant difference when compared to placebo-treated areas.
27 citations
,
June 2019 in “Aesthetic Plastic Surgery” Platelet-Rich Plasma (PRP) treatment may increase hair growth for genetic hair loss, but more research is needed to confirm this.
25 citations
,
September 2009 in “Journal of Ginseng Research” This study found that taking Korean red ginseng significantly increased hair density and thickness in patients with androgenic alopecia compared to a placebo over 24 weeks.