309 citations
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October 2007 in “Biomaterials” Keratin from human hair helps nerves heal faster.
235 citations
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July 1999 in “Journal of biological chemistry/The Journal of biological chemistry” Human hair is made up of different keratins, some strong and some weak, with specific types appearing at various stages of hair growth.
102 citations
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July 2020 in “International journal of molecular sciences” Hormones like testosterone and estrogen significantly affect hair growth and structure.
84 citations
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April 2002 in “Archives of Dermatology” Loose anagen hair syndrome may be caused by keratin gene mutations.
75 citations
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April 2000 in “Developmental Dynamics” Whn is essential for hair growth, and its malfunction causes hair loss.
65 citations
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May 2006 in “Journal of Structural Biology” Hair curliness is due to uneven distribution of different cortices within the hair fiber.
52 citations
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May 2006 in “Journal of Structural Biology” Keratin-associated proteins help link filaments and affect keratin's strength.
48 citations
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November 2002 in “Journal of biological chemistry/The Journal of biological chemistry” Genetic variations in hair keratin proteins exist but don't significantly affect hair structure.
46 citations
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June 2013 in “Journal of structural biology” High glycine–tyrosine keratin-associated proteins help make hair strong and maintain its shape.
34 citations
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December 2009 in “Journal of the American Academy of Dermatology” Improper use of ceramic flat irons can cause severe hair damage.