19 citations
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November 1971 in “Clinica Chimica Acta” The document concludes that measuring γ-glutamyl transpeptidase activity is more accurate with a higher substrate concentration and using diluted acetic acid to stop the reaction.
NaOH treatment improves hair strength and suitability for textiles.
A natural, eco-friendly treatment using casein and tannic acid strengthens hair by 21% while keeping it elastic.
August 2023 in “Journal of Student Research” Human hair keratin mixed with rubber slightly improves its strength and biodegradability.
Treating hair with 1M sodium hydroxide increases its friction, making it better for small medical knots.