April 1974 in “Pediatric Research” The Naked (N) trait in mice is linked to lower glycine and tyrosine in hair proteins.
March 2023 in “International Journal of Advanced Research in Science, Communication and Technology” Various medicinal plants like Polygonum multiflorum, Red ginseng extract, and Zizyphus jujuba can potentially treat hair loss, offering benefits like low cost and multiple ways of working. Other effective natural substances include Pygeum africanum, Seneroa, Urtica dioica, and more.
July 2020 in “Environmental Science and Pollution Research” Finasteride harms invertebrates' survival and burial ability.
December 2014 in “Turk Dermatoloji Dergisi” Topical Saw Palmetto and Trichogen Veg Complex increased hair count by 11.9% and improved hair growth in 48% of men with hair loss.
NaOH treatment improves hair strength and suitability for textiles.
7 citations
,
January 1959 in “Canadian Journal of Chemistry” Human and horse hair have similar end groups to wool and feathers.
March 2024 in “Organic letters” A new method efficiently modifies alkenes to create useful medicinal compounds.
3 citations
,
January 2002 in “Springer eBooks” Alkaline hair relaxers damage hair, but cationic and non-ionic polymers can help reduce this damage.
1 citations
,
January 1998 in “Cosmetics and toiletries” Both amodimethicone and dimethicone copolyol amine are effective hair conditioners.
10 citations
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January 1994 Hair can be straightened using different chemicals, not just strong alkali.
15 citations
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April 2008 in “Steroids” The more lipophilic the progesterone derivative, the better it binds to androgen receptors and has antiandrogenic effects.
14 citations
,
September 2019 in “Forensic Science International Genetics” Hair keratin proteins can be reliably identified in hair as short as 0.12 cm, with 0.5 to 2 cm being the best length for analysis.
January 2024 in “International Journal of Cosmetic Science” A new method using 1,4-n-butylene dimaleate effectively repairs and strengthens damaged hair.
4 citations
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March 2021 in “Journal of Surfactants and Detergents” Shampoo B, which uses water-soluble silicone, is better at detangling hair in wet conditions due to its two-layer conditioning film.
198 citations
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October 1986 in “Differentiation”
4 citations
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December 2018 in “Macedonian Journal of Chemistry and Chemical Engineering” A new method accurately measures amino acids in treated hair, showing bleaching reduces amino acids while protein treatments increase them.
20 citations
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March 2020 in “International Journal of Biological Macromolecules” Lower acetylation makes chitin nanofibers thinner and more suitable for various uses.
April 2026 in “Chinese Chemical Letters”
1 citations
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June 2019 in “International Journal of Applied Pharmaceutics” Nanostructured lipid carriers can effectively repair hair split-ends for over 3 days.
5 citations
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October 2007 in “PubMed” Amino acids in conditioners improve hair strength, hydration, and color retention.
5 citations
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January 1992 Silicones in shampoos make hair smoother, easier to manage, and reduce friction.
4 citations
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November 1968 in “Textile research journal” Hair fibers may have a unique, non-protein sheath not previously identified.
October 2025 in “International Journal of Cosmetic Science” Conditioners improve hair manageability but don't repair damage.
24 citations
,
April 2016 in “Experimental Dermatology” Chemical treatments like dyeing, perming, and bleaching damage hair by altering amino acids and lipids.
13 citations
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January 2002 in “Biological chemistry” Different conditions affect how hair proteins assemble, and certain mutations can change their structure.
December 2020 in “Macromolecular Symposia” These polymers can improve hair texture and reduce water loss in hair cosmetics.
4 citations
,
January 2017 in “Biological & pharmaceutical bulletin” Inhibiting ALOX12 can help hair cuticle maturation by increasing S100A3 citrullination.
August 2005 in “Microscopy and Microanalysis” Polymethylene wax in hair relaxers makes hair smooth and shiny with less damage.
40 citations
,
September 2004 in “Biomacromolecules” The Glu413Lys mutation in keratin affects hair stability, while Glu413Asp does not.
September 1978 in “PubMed” Chondroitin sulphate is more abundant than hyaluronic acid in skin and hair samples, except in gamma-keratosis.