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In this study, the authors concluded that a hydrolyzed eggwhite protein treatment promoted the reconnection of disulfide bonds in excessively bleached hair, after reduction and oxidation processes in permanent waving.

This review suggests that although hydrolyzed collagen peptides with certain supplements may improve skin elasticity and joint function, evidence for collagen's anti-aging and regenerative benefits remains inconsistent.

In this study, a DMG-Na and caffeine-containing shampoo significantly reduced hair loss and increased hair density in men with male pattern hair loss over 6 months, compared to a placebo, without adverse effects.

This study found that an herbal hair gel formulated with natural ingredients like aloe vera and essential oils showed stability, effectiveness, and aesthetic appeal, suggesting it could be a viable, safe alternative to synthetic hair gels, with potential for future production and clinical evaluation.

This study suggests that while some evidence indicates potential efficacy of placental products for hair growth and inhibiting hair loss, the current scientific evidence is scarce and of low quality.

This study found that microfibrils play a crucial role in shaping permanent waves by thioglycolic acid, and treating damaged hair with hydrolyzed keratin improved both waving efficiency and hair damage.

This study found that a new hybrid polymer containing hydrolyzed protein and silicone effectively improved moisture feel and prevented discoloration in dyed hair, particularly benefiting damaged hair.

This study found that a newly developed injectable hydrogel combined with human umbilical cord-mesenchymal stem cells significantly accelerated wound healing and reduced inflammation in full-thickness cutaneous wounds.

This study found that homocysteine-keratin accumulation in human hair increases towards the tips, linked to copper/iron-catalyzed demethylation of methionine, and may contribute to keratin damage.

This review suggests that standardized herbal shampoos may offer a safe and sustainable alternative to synthetic products due to their natural saponins and multifunctional benefits, though challenges in consistency and shelf-life persist.

This study demonstrated that OSA hydrogels enhanced the stability and retention of dermal papilla-derived extracellular vesicles, which significantly improved hair regeneration in both cultured human hair and a mouse depilation model.

This study assessed three lactic acid bacteria-fermented proteins and found that F-WPI and F-SPI could normalize osteoclastogenesis markers in vitro, while F-SPI enhanced osteoblastogenesis markers, suggesting potential as dietary supplements for osteoporosis prevention, though further research into mechanisms is needed.

High temperatures and certain chemicals can significantly change the amino acid content in human hair.

This study found that keratin damage in mammals and birds can result from N-homocysteinylation, reducing keratin solubility and indicating significant protein modification through genetic or nutritional disruptions in homocysteine metabolism.

This study found that a bio-based repair solution containing hydrolysed wool keratin, serine, and transglutaminase improved the physical and chemical properties of damaged hair, increasing its strength, flexibility, and thermal stability while offering long-lasting protection against chemical damage.

This study found that 1-butyl-3-methylimidazolium tetrafluoroborate is the optimal ionic liquid solvent for extracting quercetin from Nothopanax scutellarium leaves.

This study found that a postbiotic derived from hawthorn and probiotics can alleviate loperamide-induced constipation in aged mice by regulating several physiological processes, including intestinal water and sodium metabolism, maintaining gut flora and barrier, reducing inflammation, and enhancing short-chain fatty acid metabolism.

This study found that a sucrose-based crosslinker can effectively straighten hair and maintain durability in high humidity and through repeated washings without affecting the hair's tensile properties or causing surface damage.

This review discusses the effects of chemical hair straighteners and reports associated side effects like scalp inflammation and hair damage, noting the variability of findings and the need for further research.

This study proposes a new method to selectively isolate keratin-associated proteins and keratin from human hair, suggesting that KAPs may support keratin fibers in hair structure.

Cold waving solutions quickly reduce cystine to cysteine in hair.

This study reports that a 9-week-old infant with Netherton syndrome showed rapid and sustained symptom improvement, including skin microbiome normalization and developmental progress, after off-label dupilumab treatment, without adverse reactions.

This study found that hair analysis is an effective non-invasive method for assessing metabolic fluctuations, showing stable advanced glycation end products levels that correlate with age and differ significantly between diabetic and non-diabetic rats.

In this study, researchers formulated and evaluated a herbal shampoo containing Tulsi leaves, Green gram extract, Flaxseed mucilage, and potato juice, finding it to possess good cleansing, foam stability, and conditioning properties, though further development is needed to enhance quality, performance, and safety.

This study found that Prss53-mutated rabbits exhibited curved hair and skeletal dyskinesia, suggesting a link between Prss53 loss and these traits, potentially involving disrupted calcium metabolism.

This review discusses zinc's role as an essential trace element in human nutrition, particularly its importance in total parenteral nutrition, and reports no new clinical results.

This case report describes a 39-year-old woman whose dermatomyositis-systemic lupus erythematosus overlap syndrome symptoms resolved after switching to tofacitinib.

This study found that several synthesized pregnane derivatives exhibited significant inhibitory effects on testosterone conversion to dihydrotestosterone and reduced related androgenic parameters in multiple pharmacological models.

This review examines the role of topoisomerase-interacting drugs in cancer treatment and emphasizes the importance of understanding their mechanisms for clinical development, but it presents no new results.

This study found that chemical hair straightening significantly reduced hair curl and improved smoothness and shine, but did not significantly affect transverse fissures or split ends, indicating potential benefits with some side effects.