November 2025 in “Journal of Clinical Medicine” This study found that a novel drinkable supplement significantly increased hair density and reduced hair shedding over six months in women with telogen effluvium, although the authors emphasize the need for larger, placebo-controlled trials to confirm these promising results.
July 2026 in “DOAJ (DOAJ: Directory of Open Access Journals)” This study found that the liposomal Sesbania grandiflora formulation significantly improved hair and scalp health in adults with hair loss compared to placebo over 180 days, enhancing factors such as hair density, thickness, growth rate, and tensile strength, with no related adverse events reported.
38 citations
,
December 2011 in “British Journal of Dermatology” This review discusses the influence of menopausal status on hair parameters in women without alopecia, finding significant differences in hair growth rate, percentage anagen, and hair diameter distributions, particularly in the frontal scalp.
13 citations
,
October 2011 in “Clinical and Experimental Dermatology” This study found no improvement in male-pattern hair loss after six months of using laser hair-comb therapy in two men.
March 2025 in “Journal of Cutaneous and Aesthetic Surgery” In this study, three different hair serums were tested for their impact on Telogen effluvium in adult females, finding all effective in reducing hair shedding, with the cytokine-based serum showing the most significant improvement, reducing hair fall by 54.6% without adverse effects.
30 citations
,
July 2017 in “Stem cells and cloning” This study found that scalp injection of fat enriched with stem cells may offer a promising alternative for treating early genetic alopecia in both men and women.
February 1990 in “PubMed” This study observed that hirsute females displayed increased S-phase hair bulb cells and decreased G0/1-phase cells compared to healthy females, with a strong correlation between S-phase percentages and DHEA-S levels.
36 citations
,
December 2009 in “Skin pharmacology and physiology” In this study, helium-neon laser irradiation at approximately 1 J/cm² significantly increased the percentage of hair follicles in the anagen phase in both testosterone-treated and untreated mice, suggesting stimulation of hair growth.
In this study, using Trichosol™ with Minoxidil (3%) increased the percentage of hair in the anagen growth phase by about 20% over 90 days compared to using Minoxidil alone.
December 1990 in “PubMed” This study found that topical application of 17 alpha-propylmesterolone significantly increased proliferative activity in hair matrix cells in men with androgenetic alopecia.
April 2023 in “The journal of investigative dermatology/Journal of investigative dermatology” This study found that the natural estrogen Estetrol (E4) may promote hair follicle growth and prevent miniaturization, suggesting its potential as a treatment for hair loss disorders.
85 citations
,
February 1989 in “Journal of The American Academy of Dermatology” This case report describes a newly identified condition called loose anagen hair of childhood, characterized by easily pluckable hair in two young boys, with variable duration and no scalp inflammation or scarring.
12 citations
,
June 2009 in “Journal of Cosmetic Dermatology” This study reports the first cases of loose anagen hair syndrome in dark-skinned children from Upper Egypt, noting it may be under-diagnosed and primarily causes cosmetic concerns without affecting general health.
September 2024 in “Journal of the American Academy of Dermatology” This study found that estetrol (E4) significantly prolonged the anagen phase and increased hair matrix keratinocyte proliferation in cultured human hair follicles, suggesting its potential as a treatment for female pattern hair loss.
18 citations
,
March 2015 in “Journal of Dermatological Case Reports” This study identified distinctive trichoscopic features that may aid in diagnosing loose anagen hair syndrome, such as rectangular black granular structures, solitary yellow dots, and a predominance of follicular units with single hairs.
1 citations
,
January 2022 in “Italian journal of dermatology and venereology” This study found that a topical treatment combining arginine and zinc significantly reduced hair loss and increased anagen hair percentage in patients with androgenetic alopecia and telogen effluvium, suggesting it might be a promising alternative to finasteride.
December 2024 in “Ukrainian Journal of Dermatology Venerology Cosmetology” This study observed that after 12 weeks of using the nutraceutical Alpenta, women with acute or chronic telogen effluvium experienced significant improvements in hair growth parameters, including increased anagen hair percentage, hair density, and diameter, with high patient satisfaction and good product tolerability reported.
1 citations
,
April 2018 in “Journal of dairy science” This study observed that hair follicle morphology in dairy cows changes during the peripartum period, with fluctuations in hair follicle width and anagen percentage but no overall marked changes in skin morphology parameters.
43 citations
,
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.
August 2024 in “Bioimpacts” In this study on mice, a hydro-alcoholic solution containing kopexil significantly enhanced hair growth and increased hair-promoting factors without causing notable liver or kidney toxicity compared to minoxidil.
5 citations
,
November 2009 in “Revista médica de Chile” This study confirms that scalp hair follicles in Chilean subjects exhibit seasonal variations, with a higher percentage of follicles in the telogen (resting) phase during the summer compared to the winter.
38 citations
,
January 2015 in “Journal of Cosmetic Dermatology” This study found that a 6-month supplementation with omega 3, omega 6, and antioxidants significantly improved hair density and reduced hair loss in women with female pattern hair loss.
23 citations
,
April 2006 in “Skin Research and Technology” This study observed that hair density and growth rates vary by location and age, and the presence of thin hairs predominates in younger women with mild patterned hair loss.
37 citations
,
January 2013 in “Postepy Dermatologii I Alergologii” This article discusses isotretinoin for severe acne vulgaris, noting its effectiveness but also highlighting significant side effects on skin, mucous membranes, and hair; it reports no new clinical results.
11 citations
,
November 2021 in “Clinical, Cosmetic and Investigational Dermatology” This study found that resveratrol promoted hair growth in mice and human hair follicles, suggesting its potential as a treatment for hair loss.
3 citations
,
June 2006 in “Expert Review of Dermatology” This review discusses recent advances in hair follicle research, highlighting therapeutic and cosmetic applications, but reports no new study results.
October 2024 in “International Journal of Molecular Sciences” In this study, Rosa rugosa water extract improved hair length and thickness in a mouse model of DHT-induced alopecia by enhancing the expression of hair growth-promoting factors while inhibiting growth-suppressive proteins, suggesting its potential as a natural therapy for hair loss prevention.
226 citations
,
September 2001 in “Journal of The American Academy of Dermatology” Hair loss in women is genetic, diagnosed by examination and biopsy, and treated with minoxidil, finasteride, or transplantation.
38 citations
,
October 1988 in “Clinics in Dermatology” This article reviews the historical development of understanding the hair growth cycle, particularly anagen, catagen, and telogen phases, and reports no new clinical findings.
18 citations
,
January 2007 in “Pharmaceutical Biology” This study found that petroleum ether extracts of Citrullus colocynthis reduced hair growth initiation time and advanced more hair follicles to the anagen phase in albino rats compared to untreated controls and minoxidil.