September 2017 in “Journal of Investigative Dermatology” The research concluded that hyaluronic acid affects the formation and growth of hair follicle-like structures in a lab setting.
December 2023 in “Royal Society of Chemistry eBooks” Nails are a useful alternative to hair for analyzing long-term substance exposure.
248 citations
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April 1988 in “Differentiation” Human and bovine hair follicles have distinct cytokeratins specific to hair-forming cells.
17 citations
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January 2013 in “Journal of Cutaneous Pathology” The onychodermis helps anchor the nail bed and may aid in nail formation.
65 citations
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December 2000 in “PubMed” The biology of skin and hair is complex and not fully understood.
119 citations
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January 2000 in “British Journal of Dermatology” Different parts of the nail express different keratins, showing unique patterns of differentiation.
1 citations
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July 2017 in “Microscopy and Microanalysis” Iron oxide nanoparticles mainly enter the skin through hair follicles and sebocytes, not the dermis.
Giant axonal neuropathy changes the structure of keratin in human hair, making it stiffer and stronger.
11 citations
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March 1959 in “Journal of Histochemistry & Cytochemistry” Sulphur, phosphorus, and metals are distributed differently in animal skin follicles, with variations in detection speed and location.
December 2025 in “Advanced Healthcare Materials” The composite helps hair growth and scalp healing by reducing stress and inflammation.
28 citations
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July 2000 in “PubMed” Hair structure forms the same way inside and outside the body.
1 citations
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February 2009 in “Journal of Investigative Dermatology” Lipase H is important for hair follicle function and shaping hair fibers.
33 citations
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August 2014 in “Veterinary Dermatology” Keratinocytes play a key role in skin health, but more research is needed.
115 citations
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November 2008 in “Proceedings of the National Academy of Sciences” Reptiles have genes similar to hair proteins, suggesting hair's genetic origins predate mammals.
20 citations
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February 1977 in “The anatomical record” Excess vitamin A changes skin and hair follicle development and affects polysaccharide distribution.
4 citations
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July 2012 in “Genesis” The Megsin-Cre transgene is a new tool for genetic manipulation in the skin and upper digestive tract.
1 citations
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April 2023 in “Langmuir” Damaged hair allows water to penetrate more easily, and fatty acids from shampoos can deposit on hair surfaces.
19 citations
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December 2006 in “Archives of dermatology” Hair casts and cutaneous spicules can be signs of multiple myeloma.
3 citations
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June 2020 in “Developmental Cell” Feather patterns are influenced by enhancers and chromatin looping, and the structure of protein complexes important for hair growth has been detailed.
27 citations
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December 2005 in “Journal of Cutaneous Pathology” The malignant pilomatricoma showed strong epithelial keratin expression, suggesting it may not calcify.
25 citations
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May 2019 in “Cosmetics” 18-MEA and cationic surfactants can restore and maintain hair's hydrophobic nature, improving its beauty and feel.
February 2025 in “Frontiers in Veterinary Science” Certain nutrients like keratin, egg yolk, and fish collagen may help pets regrow hair.
April 2026 in “Advanced Healthcare Materials” Detachable microneedles with chitin derivatives effectively promote hair regrowth in androgenic alopecia without toxicity.
January 2019 in “Proceedings for Annual Meeting of The Japanese Pharmacological Society” Nε-(carboxymethyl) lysine delays hair growth by blocking a key protein.
2 citations
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December 2022 in “Journal of toxicologic pathology” Skin structure complexity and variability are crucial for assessing skin toxicity in safety tests.
10 citations
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July 1984 in “British Journal of Dermatology” Epidermal cysts come from the skin, while pilar cysts come from hair follicles.
February 2019 in “American International Journal of Humanities Arts and Social Sciences” The dermis of Millivora Capenesis has two layers with various connective tissues, blood vessels, glands, and sensory structures.
10 citations
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January 2001 in “ACTA HISTOCHEMICA ET CYTOCHEMICA” Lysosomal proteases and cytoplasmic enzymes help hair follicle cells develop and differentiate.
25 citations
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August 1991 in “Journal of Investigative Dermatology”
226 citations
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January 2002 in “Biological and Pharmaceutical Bulletin” A new method quickly extracts and identifies proteins from hair and other keratin sources.