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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.

In this study, researchers identified a three-step process underlying age-related curved hair from cyclical extension: surface lipid transfer, specific disulfide bond cleavage, and unraveling of α-helices into β-structures, which may inform care strategies to manage hair curvature.

This resource outlines a structured oral examination approach for internal medicine students using a case study of systemic lupus erythematosus, highlighting its convenience and effectiveness based on student feedback.

This research explores the use of serial block-face scanning electron microscopy to model the complex architecture of sheep wool fibres, focusing on the role and distribution of para- and ortho-cortical cells in determining wool curliness, though the mechanism remains unclear.

This study examined hair curvature in Japanese women, finding that 47% have curved hair, and identified structural differences in hair fiber, which resemble those in wool fibers.

This study found that 53% of Japanese women have straight hair while 47% have varying degrees of curved hair, with distinct structural differences observed in the internal makeup of curved hair fibers.

This study found that in patients with non-cicatricial alopecia, hair follicles and their sheaths were thinner compared to controls, especially in cases of alopecia areata and telogen effluvium, with notable thinning beginning in the subcutaneous fat tissue.

This study found that shampoo and conditioner do not alter hair's molecular structure, while perming treatments significantly affect keratin and intermediate filament structures due to bond alterations.

African hair is more fragile due to its unique shape and internal structure.

This article discusses the mechanisms and prevention of aging, particularly in facial rejuvenation, but reports no new experimental findings.

This study analyzed how oxidative hair dye leaches from pigmented and nonpigmented hair during wash cycles, finding that melanin influences the dye deposition and leaching processes.

This study found that mechanical damage from grooming and environmental factors contributes to crack formation and eventual breakage in African-American hair, highlighting the need for continuous care.

This study found that alkali bromide solutions are absorbed into hair depending on salt activity, and the presence of the salt increases water absorption compared to normal conditions.

Curly and straight hair differ in how their internal fibers are arranged.

This study explores the physical properties of hair from various wild mammalian species using polarized light microscopy, aiming to correlate these properties with the internal structures such as the medulla, cortex, and keratin cuticle.

This study concluded that the curliness of human hair, regardless of ethnicity, originates from the inhomogeneous internal nanostructure due to differences in the distribution of two types of cortices.

This study demonstrated that keratin is widely present in various epithelial cells, providing structural strength and potential insights into the origin of cell lines.

This study found that while molecular hair structures were nearly identical across individuals, genetic factors seem to influence specific lipid compositions, as seen in identical-patterned hair from parent-child pairs and identical twins, but not fraternal twins.

This narrative review discusses the structure and functions of the skin, focusing on its barrier role, self-repair, thermoregulation, and immune functions, and reports no new experimental results.

In this study, researchers found that higher concentrations of internal lipids in African hair may influence its keratin structure, as observed through various analytical methods.

In this study, researchers observed significant variations in the hierarchical structures of domestic cat hairs and whiskers, showing that local mechanical properties are influenced by the distribution and composition of internal granules and calcium enrichment along the hair's length.

This study found that pubic hair from Korean males has a thicker cuticle layer with more scales compared to scalp hair, offering better protection against chemical damage, and hypothesizes this evolved as a defense mechanism against exposure to urine and ammonia.

This study on Indian dromedary camel breeds investigated the KRTAP7 protein, finding all four breeds shared an identical gene sequence, with 13 phosphorylation and glycosylation sites influencing hair characteristics, alongside predicted interactions with other biosynthesis-related proteins.

This review discusses how acute exposures to environmental and internal stressors can quickly alter skin functions, leading to various dermatological symptoms, and calls for more research on these short-term effects.

This study found that bioactive glass-based camouflage composite particles enhanced the coagulation effects in bleeding models by forming a fibrin network and activating coagulation pathways, suggesting potential use as an emergency hemostasis biomaterial.

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.

This study found that the internal structure and fracture patterns of hair vary among different mammal species, which could inform the development of keratin-based biomaterials for medical and cosmetic applications.

This study used ultrahigh-resolution optical coherence tomography to observe hair shaft structures, finding melanin granules absent only in white hair, which may explain color differences between black and white hair.

This study employed a laser-based method to analyze how light reflection patterns vary on human hair fibers, revealing changes related to hair color and the tilt of the cuticle cells.

This study describes a system for generating hair follicles from dissociated cells in mice, suggesting that successful development requires a foundational epithelial platform.