January 2026 in “Biomaterials and Biosystems” Keratin from chicken feathers can be safely used on damaged skin.
Hair follicle stem cells are crucial for touch sensation and proper nerve structure in mice.
48 citations
,
July 1993 in “Archives of Dermatological Research” Merkel cells are abundant in facial vellus hair follicles, especially during the anagen phase.
5 citations
,
March 1943 in “Archives of Dermatology and Syphilology” A rare case of severe scalp hair loss and nail issues in keratosis follicularis was observed.
50 citations
,
July 2008 in “British Journal of Dermatology” 5 citations
,
January 1997 in “Birkhäuser Basel eBooks” 248 citations
,
April 1988 in “Differentiation” Human and bovine hair follicles have distinct cytokeratins specific to hair-forming cells.
119 citations
,
January 2000 in “British Journal of Dermatology” Different parts of the nail express different keratins, showing unique patterns of differentiation.
January 2026 in “Digitalen Hochschulbibliothek Sachsen-Anhalt (Universitäts- und Landesbibliothek Sachsen-Anhalt)” Keratin from chicken feathers can be safely used for skin benefits.
103 citations
,
December 1986 in “Journal of Investigative Dermatology”
15 citations
,
April 2014 in “Experimental Dermatology” Scientists developed a system to study human hair growth using skin cells, which could help understand hair development and improve skin substitutes for medical use.
13 citations
,
January 2018 in “Advances in experimental medicine and biology” 8 citations
,
September 1981 in “Zentralblatt für Veterinärmedizin Reihe A” Biotin deficiency in pigs causes hair loss, skin issues, and weak claws.
33 citations
,
August 2014 in “Veterinary Dermatology” Keratinocytes play a key role in skin health, but more research is needed.
44 citations
,
March 2019 in “Experimental Dermatology” A wide range of proteins are integrated into the skin's protective layer.
15 citations
,
December 2020 in “International journal of molecular sciences” Epidermal stem cells create and maintain skin structures like hair and nails through specific signaling pathways and vary by location and function.
January 2013 in “Journal of Tissue Engineering and Reconstructive Surgery” Inserting hair follicle units improved the development of tissue-engineered skin.
16 citations
,
August 1992 in “Archives of dermatological research” Lab-grown nail cells show characteristics similar to natural nail and hair.
4 citations
,
November 1968 in “Textile research journal” Hair fibers may have a unique, non-protein sheath not previously identified.
14 citations
,
May 2022 in “Stem cell reports” The study created hair-bearing skin models that lack a key protein for skin layer attachment, limiting their use for certain skin disease research.
13 citations
,
December 1983 in “Canadian journal of zoology” Heterotypic cell contacts likely help hair matrix cells differentiate during mouse hair follicle development.
72 citations
,
December 2018 in “Journal of Experimental Zoology Part B Molecular and Developmental Evolution” Corneous beta-proteins evolved uniquely in reptiles and birds, forming scales, claws, beaks, and feathers.
30 citations
,
November 1992 in “The Journal of Dermatology” Keratohyalin and trichohyalin proteins help form and organize skin and hair structures.
August 2013 in “International Wound Journal” Non-hairy skin cells might be used to regenerate hair, helping with baldness and skin wounds.
95 citations
,
January 2009 in “Journal of Biomedical Optics” Nanoparticles penetrate hair follicles better when their size matches the cuticula thickness.
July 2013 in “University of Southern California Digital Library” New stem cells in nails and sweat glands can regenerate skin and hair.
5 citations
,
January 2016 in “Stem Cells International” Certain skin cells near the base of hair muscles may help renew and stabilize skin, possibly affecting skin disorder understanding.
4 citations
,
August 2013 in “Pediatric dermatology” Hair casts can be treated with physical removal and special shampoos.
23 citations
,
January 1981 Hair is mostly made of three protein types: helical, high-sulfur, and high-tyrosine.