August 2022 in “Clinical and Experimental Dermatology” Amino acid supplements may not be necessary for all women with chronic hair loss.
July 2009 in “International Journal of Cosmetic Science” Japanese women's curved hair has an uneven internal structure and varied amino acid composition.
76 citations
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December 2011 in “Journal of Cell Science” Different keratin types have unique amino acid patterns that are evolutionarily conserved.
83 citations
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April 1992 in “Journal of Biological Chemistry” Four-amino acid part makes enzyme sensitive to finasteride.
80 citations
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December 1996 in “Pain” Disruption of glycinergic circuits increases pain sensitivity, suggesting new pain treatment options.
28 citations
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September 2002 in “The Journal of Comparative Neurology” Presynaptic inhibition of certain nerve fibers in cats is mainly controlled by GABA and glycine.
August 2025 in “Frontiers in Nutrition” Leucine levels may affect hair loss after bariatric surgery.
February 2025 in “International Journal of Cosmetic Science” A new amino acid derivative, ATS, improves hair texture and moisture, making it easier to straighten curly hair.
38 citations
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May 2000 in “Livestock production science” Giving high-quality protein or methionine supplements helps improve hair growth in Angora goats and, to a lesser extent, in Cashmere goats.
238 citations
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May 1989 in “Journal of Investigative Dermatology”
12 citations
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August 1984 in “Genetics Research” The N gene affects the protein makeup of mouse hair.
11 citations
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November 1966 in “Experimental Biology and Medicine” Hair diameter can indicate protein status in malnourished children if sample location is controlled.
2 citations
,
October 2023 in “Animals” Lacto-fermentation changes amino acid profiles in bovine colostrum, but results are inconsistent.
43 citations
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April 2005 in “The Journal of Dermatology” Biotin supplements improved skin and hair in a biotin-deficient infant on amino acid formula.
3 citations
,
June 2012 in “Korean Journal of Human Ecology” The supplement reduced hair loss and increased hair thickness safely.
1 citations
,
April 1977 in “Munich Personal RePEc Archive (Ludwig Maximilian University of Munich)”
January 2011 in “Yearbook of Dermatology and Dermatologic Surgery” Hair relaxers are linked to reduced cystine levels and potential hair damage.
99 citations
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August 1998 in “Pain” Blocking GABA(A) receptors increases neuron sensitivity, showing GABA and glycine have different roles in pain.
11 citations
,
December 2017 in “Orphanet Journal of Rare Diseases” A new mutation in the ST14 gene broadens the understanding of ichthyosis-hypotrichosis syndrome.
November 2022 in “Arab Gulf Journal of Scientific Research” Taurine is important for many body functions and its deficiency can cause health problems.
June 2015 in “Han'gug eung'yong saengmyeong hwa haghoeji/Journal of the Korean Society for Applied Biological Chemistry” Some synthesized peptides improved cell growth better than thymosin β4, VEGF, and minoxidil.
December 2024 in “PubMed” 51 citations
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January 2007 in “The journal of investigative dermatology/Journal of investigative dermatology” Scientists discovered a unique hair protein, KAP24.1, with a special structure, found only in the upper part of hair cuticles.
2 citations
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January 2022 in “Journal of Oleo Science” Genotype CG17 of garden cress seeds has the most β-carotenoids, tocopherols, and vitamins.
24 citations
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April 2016 in “Experimental Dermatology” Chemical treatments like dyeing, perming, and bleaching damage hair by altering amino acids and lipids.
66 citations
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February 2010 in “CrystEngComm” Made 8 minoxidil samples; 1 cocrystal, 7 salts formed.
April 2019 in “Digital Library of Theses and Dissertations (Universidade de São Paulo)” Hair straightening at pH 1.0 improves alignment but weakens hair more than pH 2.0.
15 citations
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October 1970 in “Archives of disease in childhood” Hair amino acid levels can indicate metabolic disorders.
January 2023 in “Side effects of drugs annual” Some vitamins, amino acids, and alternative medicines can cause serious side effects, including bone, muscle, and skin issues, and healthcare professionals should be aware of these risks.
72 citations
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September 1975 in “Biology of Reproduction” Most zinc in rat sperm is in the tail, linked to structures similar to hair keratin.