This study found that coconut oil may protect the cuticle of chemically treated hair, which tends to be damaged compared to untreated hair.
October 2012 in “Advanced Materials Research” This study found that temperature significantly affects the mechanical properties of rabbit hair fibers, with increased tensile strain and decreased breaking strength in humid conditions.
2 citations
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July 2012 in “PubMed” In this study, the use of internal wool lipid liposomes was shown to improve the lipid composition and increase the resistance to breaking in both untreated and chemically treated hair fibers.
2 citations
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January 2015 in “Sen'i Gakkaishi” This study found that washing hair after reduction in a permanent waving process allows for significant reformation of disulfide cross-links, enhancing the strength and elasticity of hair fibers.
6 citations
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January 2021 in “TURKISH JOURNAL OF MEDICAL SCIENCES” In this study, the authors observed that the combined treatment group showed a significant increase in inflammatory cell density and a higher maximum tensile breaking force in tendon repair by the end of the second month.