Hair resistance to mechanical wear

Ribeiro, Artur; Martins, Madalena; Tinoco, Ana

doi:10.1016/j.wear.2021.203612

Cited by 5 publications

(3 citation statements)

References 36 publications

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“…While researchers predominantly investigate the potential for hair regeneration in AGA, there is limited emphasis on hair quality in areas affected by hair loss. Exposure to sunlight can lead to photodegradation of human hair, with hair photoaging characterized by the lifting of hair cuticles [ 24 ], degradation of keratin [ 35 ], disruption of disulfide bonds [ 36 ], depletion of natural oils, loss of shine, heightened frictional resistance, and compromised mechanical properties [ 37 ]. Based on the findings presented in Figure 1 b, it is evident that there was minimal hair damage in the balding region of AGA, characterized by raised scales, suggesting overall surface structural impairment.…”

Section: Discussionmentioning

confidence: 99%

Antioxidant Properties of Platycladus orientalis Flavonoids for Treating UV-Induced Damage in Androgenetic Alopecia Hair

Xu,

Dai,

et al. 2024

Molecules

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Background: Androgenetic alopecia (AGA) causes thinning hair, but poor hair quality in balding areas and damage from UV radiation have been overlooked. Plant extracts like Platycladus orientalis flavonoids (POFs) may improve hair quality in AGA. This study examines POFs’ effectiveness in treating AGA-affected hair and repairing UV-induced damage. Methods: Hair samples were analyzed using scanning electron microscopy (SEM) to examine surface characteristics, electron paramagnetic resonance (EPR) spectroscopy to measure free radicals in the hair, and spectrophotometry to assess changes in hair properties. Results: POFs effectively removed hydroxyl radicals from keratinocytes and had antioxidant properties. They also reduced UV-induced damage to AGA hair by mitigating the production of melanin free radicals. Following POF treatment, the reduction in peroxidized lipid loss in AGA hair was notable at 59.72%, thereby effectively delaying the progression of hair color change. Moreover, protein loss decreased by 191.1 μ/g and tryptophan loss by 15.03%, ultimately enhancing hair’s tensile strength. Conclusion: compared to healthy hair, hair damaged by AGA shows more pronounced signs of damage when exposed to UV radiation. POFs help protect balding hair by reducing oxidative damage and slowing down melanin degradation.

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Section: Discussionmentioning

confidence: 99%

Antioxidant Properties of Platycladus orientalis Flavonoids for Treating UV-Induced Damage in Androgenetic Alopecia Hair

Xu,

Dai,

et al. 2024

Molecules

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“…The effect of the formulations on the hair resistance to the mechanical wear was expressed in terms of hairs mass loss after the mechanical insult. 27 To that, 10 mg of each hair sample was cut in 0.5 cm fragments and were incubated with five hardened steel balls and 700 μL of distilled water in 2 mL Eppendorf tubes. The samples were vortexed under 2500 rpm during 12 h, and the reaction mixtures were filtered using a membrane pore size of 5.0 μm.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

Hair Styling Based on Eutectic Formulations with Peptides

Carvalho

Ribeiro

Silva

et al. 2022

ACS Sustainable Chem. Eng.

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Eutectic-based formulations were developed aiming to modify the shape and improve the mechanical properties of Asian hair. These formulations comprised a eutectic mixture (choline chloride and urea) as a solvent, a natural reducing agent (l-cysteine), and a decapeptide. The treatment of Asian hair with the eutectic-based formulations increased the resistance of hair to mechanical wear by about 10% when compared with hair treated with a styling commercial formulation (chemical treatment). For these samples, the change in hair shape is associated with the presence of cysteine and the decapeptide, which participates in the disruption and in the rearrangement of new disulfide bonds with the keratin fibers. The eutectic-based formulations here presented show great potential to be used as a new class of hair styling agents in haircare research. These new formulations will avoid/reduce the application of harsh chemicals, which induce irreversible damage in hair structure and have a negative impact on the environment.

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“…A simple cornea model was developed for the tribological assessment of different eye drops [764]. The resistance of hair to mechanical wear was correlated with hair mechanical properties and the effects of cosmetic treatments were evaluated [765]. An in vivo methodology was developed to investigate the tactile friction and sensory properties between human skin and hair, and effects of hair care products/shampoos were evaluated [766].…”

Section: Othersmentioning

confidence: 99%

A review of advances in tribology in 2020–2021

Meng

et al. 2022

Friction

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Around 1,000 peer-reviewed papers were selected from 3,450 articles published during 2020–2021, and reviewed as the representative advances in tribology research worldwide. The survey highlights the development in lubrication, wear and surface engineering, biotribology, high temperature tribology, and computational tribology, providing a show window of the achievements of recent fundamental and application researches in the field of tribology.

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Hair resistance to mechanical wear

Cited by 5 publications

References 36 publications

Antioxidant Properties of Platycladus orientalis Flavonoids for Treating UV-Induced Damage in Androgenetic Alopecia Hair

Antioxidant Properties of Platycladus orientalis Flavonoids for Treating UV-Induced Damage in Androgenetic Alopecia Hair

Hair Styling Based on Eutectic Formulations with Peptides

A review of advances in tribology in 2020–2021

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