5 citations
,
November 2017 in “Asian journal of pharmaceutical and clinical research” This study found that water fractions of Angiopteris evecta stimulated hair growth in male rabbits, suggesting potential alopecia treatment benefits pending further research in humans.
July 2023 in “Clinical, Cosmetic and Investigational Dermatology” This study explains surgical techniques for hair transplantation using the sharp implanter method, emphasizing 11 key principles that optimize efficiency and precision, and reports high graft survival and natural hair density when these principles are followed.
1 citations
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January 2020 in “bioRxiv (Cold Spring Harbor Laboratory)” This study suggests that Dicer, but not Tarbp2, plays a crucial role in regulating the growth phase of hair follicles in bulge stem cells during post-natal development in mice.
28 citations
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October 1992 in “JEADV. Journal of the European Academy of Dermatology and Venereology/Journal of the European Academy of Dermatology and Venereology” In this study, Scalp Immersion Proxigraphy (SIP) was shown to produce more accurate measurements of linear hair growth rate than crude phototrichogram techniques, suggesting SIP's suitability for clinical trials monitoring hair growth.
208 citations
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December 2003 in “Journal of Investigative Dermatology” This study found that dermal papilla and peribulbar dermal sheath cup cells in mice can both induce hair follicle formation, suggesting they may have similar functional roles in hair growth.
April 2021 in “Journal of Investigative Dermatology” In this study, researchers observed that different ERK signal activation dynamics during hair follicle regeneration are linked to cell fate specification and are affected by distinct upstream signaling pathways.
6 citations
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July 2016 in “Cell cycle/Cell cycle (Georgetown, Tex. Online)” This study observed that HAP stem cells from the whiskers of young mice near the ear differentiated into heart-muscle cells more efficiently than those from older mice or other whisker locations.
This study investigated the expression of KRTAP6 gene family in Gansu Alpine fine-wool sheep, finding significant expression during the anagen phase and a negative correlation between KRTAP6-1 and KRTAP6-5 expressions with wool fiber diameter and strength.
3 citations
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December 1990 in “Acta Medica et Biologica” January 2010 in “BMC Genomics” This study found that KAP and KRTAP genes positively correlate with the cashmere growth cycle, and their regulation aligns with the growth phases of cashmere in secondary hair follicles.
This study found that 54% of participants with androgenetic alopecia using Ricapil® showed clinical signs of hair follicle reactivation and initial hair regrowth over three months.
January 2026 in “PLoS Biology” This study used developing mouse hair follicles to explore early epithelial bud formation, finding that the Rho GTPase regulator ARHGEF3 plays a crucial role in regulating cell fate and cadherin patterning, with knockouts showing disrupted morphology and increased straight hair follicle growth.
January 2022 in “Figshare” Melatonin affects when and how goat hair follicle genes turn on and off during growth cycles.
29 citations
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March 2016 in “Cell cycle/Cell cycle (Georgetown, Tex. Online)” This study observed that isoproterenol directs hair-follicle-associated pluripotent stem cells to differentiate into cardiac muscle cells in large numbers, forming tissue sheets of beating heart muscle cells in culture.
5 citations
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January 2005 in “PubMed” In this study, researchers observed that apoptosis occurs in both growing and regressing hair follicles in dogs, indicating a spatio-temporal relationship with the hair cycle.
8 citations
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October 2020 in “International Journal of Molecular Sciences” This laboratory study found that nonanal, a plant scent compound, may stimulate growth factors and cell proliferation in human hair follicle dermal papilla cells, suggesting a cAMP-mediated mechanism.
76 citations
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February 1993 in “Journal of Biological Chemistry” This research observed that sheep and rabbit KAP6 genes, expressed in hair follicle cells, have high sequence similarity and indicate conservation due to evolutionary selection pressures.
February 2026 in “Journal of the Korean Society of Cosmetology” This study found that applying a red clover-chamomile complex extract ampoule for 4 weeks significantly improved hair density and shaft thickness at the hairline in participants with self-perceived decreased density.
24 citations
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March 2016 in “Journal of Investigative Dermatology” This study suggests that TIP39 and its receptor PTH2R, identified in human epidermis, may play a role in keratinocyte function and influence skin differentiation.
September 2025 in “Animals” This study identified novel genetic variations in the KRTAP22-2 gene among eight sheep breeds but found no association between these genotypes and wool fibre traits, indicating possible species-specific differences compared to goats.
July 2018 in “Zenodo (CERN European Organization for Nuclear Research)” In this study, the use of Dravanti beeja lepa for 28 days was observed to significantly regenerate hair in patients with Indralupta (Alopecia Areata).
June 2025 in “Korean Journal of Pharmacognosy” In a mouse model, this study reported that the compound isoalantolactone significantly improved hair growth and thickness, suggesting its potential as a treatment for hair loss.
1 citations
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October 2021 in “Gene, cell and tissue” This study found that grape sap significantly improved hair growth and follicle health in male Wistar rats, suggesting its potential as a non-chemical treatment for hair loss.
29 citations
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September 2017 in “Genes” This study found that in Merino-Southdown cross sheep, the presence of the C variant of the KRTAP26-1 gene was associated with higher wool quality, including increased wool yield and staple length.
June 2024 in “JURNAL PENDIDIKAN DAN KELUARGA” This experimental study evaluated celery extract as a hair tonic, finding it contains vitamin A and flavonoids. Organoleptic and pH tests indicated favorable smell, color, absorption, and user preference, supporting its potential as a natural ingredient for hair health applications.
10 citations
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August 1998 in “Journal of Investigative Dermatology” January 1987 in “Data Archiving and Networked Services (DANS)” This article discusses the metabolism of benzo(a)pyrene in chemical carcinogenesis and reports no new experimental findings.
August 2016 in “Journal of Investigative Dermatology” This study found that the activity of CD73, an enzyme expressed in the hair follicle epithelium, may regulate human hair growth by modulating adenosine production.
January 2012 in “Institutional Repositories DataBase (IRDB)” This study observed that cell aggregates derived from mouse skin and lung tissues may aid in hair follicle regeneration when transplanted into skin defects of immunodeficient mice.
May 2026 in “Journal of Investigative Dermatology”