February 2026 in “Pakistan Veterinary Journal” Selenium and Vitamin E supplements improved antioxidant levels and cashmere production in goats.
29 citations
,
July 2003 in “Experimental Dermatology” The upper hair follicle is stable, while the lower part allows movement during hair growth.
January 2004 in “Linchuang pifuke zazhi” All-trans retinoic acid helps amelanotic melanocytes in hair follicles develop and produce pigment while reducing their growth.
9 citations
,
April 2018 in “Canadian Journal of Animal Science” LEF-1 boosts cell growth in goat hair follicles, aiding cashmere production.
19 citations
,
November 2017 in “General and comparative endocrinology” BMP2 and BMPR-IA may stop hair growth while Noggin may encourage it in yak skin.
52 citations
,
October 2005 in “Journal of Investigative Dermatology” Hair follicle stem cells have greater longevity and adhesion, while transit-amplifying cells are more mobile.
September 2023 in “Journal of Nutrition and Metabolism” One Ashwagandha extract may help protect cells with its antioxidant properties, while another could promote hair growth.
November 2022 in “Journal of Investigative Dermatology” Fish-derived collagen may help hair grow longer and affect hair stem cells, while bovine collagen could benefit hair stem cell maintenance, potentially aiding in hair loss conditions.
81 citations
,
January 2003 in “The FASEB Journal” Follistatin helps hair growth and cycling, while activin prevents it.
7 citations
,
March 2012 in “Journal of Investigative Dermatology” Some thymic peptides can increase human hair growth, while others may inhibit it.
3 citations
,
March 2019 in “Acta histochemica” Angiotensin II is found at higher levels in black sheep skin and may influence coat color.
1 citations
,
July 2025 in “Biomaterials Advances” 3D cultures respond better to minoxidil, while 2D cultures respond better to DHT.
124 citations
,
August 1994 in “Journal of Investigative Dermatology” Dexamethasone speeds up hair loss in mice, while cyclosporin A slows it down.
53 citations
,
July 1981 in “Journal of Endocrinology” α-MSH and cyclic AMP boost melanin production, while cyclic GMP and melatonin reduce it.
April 2018 in “The journal of investigative dermatology/Journal of investigative dermatology” Higher fluence in hair removal damages hair follicles more, while lower fluence mimics natural hair regression, with long-term IPL treatments effectively reducing hair.
31 citations
,
November 1991 in “Brain Research” Aδ-LTMRs have complex synapses with glycine, while Aβ-LTMRs have simpler ones.
Moderate immune responses help hair growth, while excessive responses slow it down.
28 citations
,
August 2005 in “Journal of Investigative Dermatology” TG5 helps maintain hair follicle health, while TG3 aids in hair shaft development.
1 citations
,
January 2016 in “Acta histochemica” Black sheep have higher levels of Gnαs and Gnα11 proteins, which may affect their coat color.
January 2013 in “IRIS UNIMORE (University of Modena and Reggio Emilia)” Hydrophobized silica nanoparticles penetrate the skin's outer layer more effectively, while hair follicle density doesn't impact their accumulation.
23 citations
,
May 1998 in “Journal of Dermatological Science” Insulin or IGF-I is needed for hair growth in newborn mice, while minoxidil helps adult mouse hair grow, suggesting a way to study human hair loss.
12 citations
,
December 1981 in “Journal of Endocrinology” α-MSH increases melanin production in moulting hair follicles, while AVT inhibits it.
10 citations
,
February 2019 in “Journal of cellular physiology” TGF-β2 helps yak hair follicles enter the regression phase, while HSP70 tries to prevent it.
6 citations
,
April 1989 in “Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms” Sulphur in hair follicles increases from the bulb and then levels off, while other elements vary in distribution.
High concentrations of retinoic acid kill hair follicle stem cells, while low concentrations may help treat skin diseases.
93 citations
,
July 2006 in “Journal of Investigative Dermatology” K25, K27, and K28 are found in all inner root sheath layers of hair, while K26 is only in the cuticle.
52 citations
,
May 2015 in “PLOS Genetics” miR-22, a type of microRNA, controls hair growth and its overproduction can cause hair loss, while its absence can speed up hair growth.
37 citations
,
January 1975 in “Journal of Experimental Zoology” Epilation doesn't affect rat hair growth; thyroxine speeds it up, while estradiol slows it down.
May 2022 in “Journal of Immunology” A parasite molecule can speed up skin healing and reduce scarring.
1 citations
,
January 2004 in “PubMed” NGF and minoxidil promote hair growth, while 17 beta-E2 inhibits it.