April 2020 in “International Journal of Cosmetic Science” The study found that minor protein differences between curved and straight Japanese hair are unlikely to significantly affect hair structure.
January 2005 in “Fuzhou daxue xuebao. Ziran kexue ban” The method is quick and effective for testing steroid 5 alpha-reductase inhibitors.
Using silicon circular iron on Korean women's hair increases hair thickness the most.
28 citations
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December 2011 in “Biocatalysis and biotransformation” PDI helps restore over-bleached hair's strength and structure by attaching special peptides.
1 citations
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January 2013 in “PubMed” Permanent wave treatment with thioglycolic acid changes hair structure by altering disulfide bonds.
October 2025 in “Journal of Neurophysiology” BK and Kv4.2 channels help Merkel cells in rat whiskers sense touch.
3 citations
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January 1977 in “Electroencephalography and Clinical Neurophysiology” 
8 citations
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January 2016 in “Journal of fiber science and technology” Bleaching hair increases cysteic acid levels in a predictable way.
February 2009 in “Journal of The American Academy of Dermatology” The document concludes that detailed clinical descriptions of seven family cases help understand dominant dystrophic epidermolysis bullosa's symptoms and inheritance.
1 citations
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November 2004 in “International Journal of Cosmetic Science” External agents penetrate skin more easily in areas with fewer lipids, especially through hair follicles.
1 citations
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April 2018 in “Dermatologic Surgery” 1 citations
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January 2012 in “CINECA IRIS Institutial research information system (University of Pisa)” 
1 citations
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March 2005 in “International Journal of Cosmetic Science” Twisting hair weakens it, but strength can be recovered at low twist levels.
May 2026 in “Advanced Materials Interfaces” The new coating protects and strengthens hair while improving its properties.
The document corrects a mistake by stating that pimecrolimus, not tacrolimus, is the drug that concentrates in the skin.
3 citations
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January 2021 in “Wear” Hair's resistance to wear varies by ethnicity and treatment, with less wear indicating stronger hair.
7 citations
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December 2011 in “Springer eBooks” I'm sorry, but I can't provide a summary without the content of the document.
January 2006 in “东华大学学报：英文版” Microwave plasma treatment improves yak hair dyeing.
October 2023 in “Pediatric dermatology” Middle Eastern patients with epidermolysis bullosa show specific genetic mutations linked to different types of the disease.
December 2014 in “Nicolaus Copernicus University Repository (Nicolaus Copernicus University)” Polyquaternium-7 improves hair condition.
January 2026 in “International Journal of Biological Macromolecules” Small KP peptide improves hair without reducing agents, while larger proteins need them for better results.
January 2013 in “Sen'i Gakkaishi” Microfibrils are key for permanent waves, and hydrolyzed keratin improves wave formation and hair condition.
February 1990 in “PubMed” Hair follicle cells and skin cells differ in keratinization and other features.
189 citations
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July 2009 in “The Journal of clinical investigation/The journal of clinical investigation” Epidermolysis bullosa simplex causes easily blistered skin due to faulty skin cell proteins, leading to new treatment ideas.
April 2025 in “BMC Chemistry” Thiadiazole chitosan conjugates improve hair manageability, moisture, and protection in conditioners.
31 citations
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January 2014 in “The Scientific World JOURNAL” Eclipta prostrata extract protects skin cells from UVB damage and has strong antioxidant properties.
Haircare products may expose users to harmful chemicals despite regulations.
323 citations
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November 1984 in “Journal of Investigative Dermatology” January 2026 in “British Journal of Dermatology” ELF5 is essential for skin cell growth and maintenance.
7 citations
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January 2020 in “International Journal of Molecular Sciences” Low-frequency electromagnetic fields can boost molecules related to hair growth in human skin cells.