4 citations,
July 2006 in “British journal of dermatology/British journal of dermatology, Supplement” Testosterone increases hair follicle cell growth when beard or axillary skin cells are present together.
48 citations,
April 1995 in “PubMed” Testosterone helps beard and axillary hair cells grow by releasing growth factors from dermal papilla cells.
28 citations,
March 2019 in “Journal of Dermatological Science” The document concludes that while lab results for hair growth promotion are promising, human trials are needed and better testing methods should be developed.
5 citations,
November 2020 in “Frontiers in Cell and Developmental Biology” The "Two-Cell Assemblage" assay is a new, simple method to identify substances that may promote hair growth.
March 2023 in “Biomedicine & Pharmacotherapy” GPR40 agonists help hair growth through the protein ANGPTL4.
4 citations,
May 2012 in “Tissue Engineering and Regenerative Medicine” Scientists created three types of structures to help regrow hair follicles, and all showed promising results for hair regeneration.
22 citations,
November 2013 in “Clinical and experimental dermatology (Print)” Ecklonia cava, a type of seaweed, may help hair grow.
3 citations,
August 2020 in “International Journal of Molecular Sciences” Blocking Rab27a slows hair growth, while blocking Rab27b encourages it.
25 citations,
July 1994 in “Journal of dermatological science” Testosterone affects hair follicles differently across body sites, with beard hair follicles showing more activity of a specific enzyme and presence of androgen receptors compared to scalp hair.
2 citations,
January 2022 in “International Journal of Medical Sciences” Kartogenin may help treat hair loss by promoting hair growth and extending the hair growth phase.
25 citations,
September 2018 in “Scientific Reports” Morroniside may help hair grow and stay in its growth phase by affecting certain cell signals.
22 citations,
March 2017 in “Scientific reports” Double-stranded RNA causes inflammation in hair follicle cells, which may help understand and treat alopecia areata.
86 citations,
May 2002 in “Journal of Investigative Dermatology” A new keratin, hK6irs1, is found in all layers of the hair follicle's inner root sheath.
7 citations,
December 2011 in “Annals of anatomy” Involucrin helps strengthen the inner parts of human hair.
356 citations,
December 1986 in “The journal of cell biology/The Journal of cell biology” Hair and nail cells share similar proteins, indicating a common differentiation pathway.
15 citations,
July 2004 in “Journal of morphology” Monotreme hair structure and protein distribution are similar to other mammals, but their inner root sheath cornifies differently, suggesting a unique evolution from reptile skin.
71 citations,
October 2008 in “The journal of investigative dermatology/Journal of investigative dermatology” HFMs can help study hair growth and test potential hair growth drugs.
68 citations,
December 1991 in “Annals of the New York Academy of Sciences” Hair growth can be induced by certain cells found at the base of hair follicles, and these cells may also influence hair development and regeneration.
2 citations,
November 2003 in “Humana Press eBooks” Hair follicle cells can help heal wounds and study skin diseases.
19 citations,
July 2011 in “Microscopy and Microanalysis” The hair follicle bulge is an important area for adult stem cells involved in hair growth and repair, with potential for medical use needing more research.
33 citations,
January 1997 in “Endocrinology” Testosterone can slow down hair growth when combined with certain cells from bald scalps, and this effect can be blocked by an androgen receptor blocker.
25 citations,
July 2008 in “British Journal of Dermatology” CD10 and CD34 levels change during hair development and different hair growth stages, which could be important for hair regeneration treatments.
July 2024 in “Frontiers in Pharmacology” Pilose antler extracts help hair growth by activating hair follicle stem cells.
15 citations,
July 2019 in “Journal of Investigative Dermatology” CBD can either reduce inflammation and not affect hair growth at low levels or inhibit hair growth at high levels.
949 citations,
January 2001 in “Cell” Adult mouse skin contains stem cells that can create new hair, skin, and oil glands.
9 citations,
August 2014 in “European journal of ophthalmology” PGF2α receptors in human eyelids are found in specific parts of hair follicles, explaining eyelash changes with glaucoma treatment.
September 2017 in “Journal of Investigative Dermatology” Blue light helps hair growth by affecting specific proteins in hair follicle cells.
45 citations,
December 2007 in “The FASEB journal” There are two types of stem cells in rodent hair follicles, each with different keratin proteins.
33 citations,
January 2006 in “Journal of Dermatological Science” A long-acting Vitamin C derivative helps hair grow by stimulating cells and increasing growth factors.
33 citations,
April 2020 in “Journal of Clinical Investigation” Stress in hair follicle stem cells causes inflammation in a chronic skin condition through a specific immune response pathway.