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This review discusses the physiological skin changes during pregnancy and reports no new clinical results, emphasizing the importance of distinguishing these changes from pathological conditions.

This study found that Caucasian hair is destroyed more easily than Asian hair when stretched, as indicated by changes in secondary structure, disulfide bond breakage, and physical disintegration.

This review outlines the diagnostic criteria for congenital and hereditary hair shaft abnormalities and emphasizes the need to understand the weathering process in assessing these disorders.

This study found that keratin filament networks in SG1 cells of mice undergo dynamic changes during cornification, impacting the barrier function of the stratum corneum.

This study found that their novel 3D-imaging method, ASAXA-μCT, identified shrinkage of sweat glands as a key factor in skin aging, which leads to dermal defects, decreased elasticity, and increased wrinkling and sagging.

This study observed that hydrophobic modifications of hair matrix proteins significantly alter the humidity-dependent glass transition temperature of human hair.

This study found that rebonding hair straightening treatments visibly damage the hair cuticle, causing surface erosion and cracks, as shown through Scanning Electron Microscopy analysis.

Fibronectin and other basement membrane components increase during hair growth and decrease during rest.

This study found that hair damage from sunlight and chemical processes like perms and bleaching varies in internal microstructure changes, suggesting that protective techniques should be tailored to the type of chemical treatment used.

Oxidation changes the structure of hair protein filaments, causing them to compact and rearrange.

In this study, pigmentary changes were the most common skin changes observed in pregnant women, affecting over 90% of the participants.

This study found that in lichen planopilaris, the basement membrane zone of the hair follicles exhibited disrupted and discontinuous staining patterns, potentially contributing to scarring and irreversible hair loss.

This study introduced a novel method that uses upright structured illumination microscopy and atomic force microscopy to map the mechanical properties of thick living tissue slices, revealing the intricate mechanical heterogeneity of mouse skin and effects of preservation techniques on tissue stiffness.

In this study, the researchers found that transplanted hair follicles undergo significant morphological changes, including a thickened dermal sheath and increased hair shaft diameter, which are associated with altered follicular vascularization.

In this study, highly dynamic remodeling was observed in mouse somatosensory axons and Merkel cells, indicating that epithelial-neural interactions help maintain homeostatic remodeling, with additional intrinsic neural mechanisms contributing to axonal plasticity.

This study found that white hair fibers have lower lipid content and different water absorption dynamics compared to brown hair fibers, suggesting differences in their barrier functions.

In this study, pneumatic injections of non-cross-linked hyaluronic acid were associated with improvements in skin texture, pores, wrinkles, and transepidermal water loss in healthy female volunteers.

This study found that scanning electron microscopy revealed significant hair shaft changes in women using straighteners, but not in those using hair dye, suggesting its utility in assessing chemical treatment effects on hair.

This study observed significant skin changes, including epidermal thickening and pleomorphic keratinocytes, in rats after subchronic UVB irradiation, highlighting specific reactions in the dorsal skin.

This study discovered previously unknown structures in human hair shafts that may stabilize hair structurally and physicochemically.

This review discusses the role of tissue mechanics and extracellular matrix in skin aging processes and highlights potential therapeutic strategies, but reports no new clinical results.

This study observed that human hair keratin showed distinct morphological features depending on the dissolution speed, which could have potential applications in clinical settings for developing self-tendons.

This study found that pregnant women experience a broad array of skin changes, with pigmentary alterations and striae being the most common physiological changes observed.

This study found that skin changes such as pigmentary alterations, vascular and connective tissue changes are common during pregnancy, with areola/nipple darkening and striae gravidarum frequently observed.

In this study, researchers observed that even a single session of hair dyeing can damage hair fibers, with significant worsening of mechanical properties and protein composition after three or more consecutive treatments, emphasizing the need to consider the cumulative impacts of dyeing on hair health.

This article discusses skin changes during pregnancy and emphasizes the importance of recognizing these physiological manifestations to prevent unnecessary tests and stress for pregnant patients; it reports no new study findings.

This study found that oxidized hair undergoes time-related structural changes, resulting in improved thermal and mechanical stability over several months after moderate or intense oxidative treatments.

This study reported detailed three-dimensional ultrastructural observations of human hair and hair follicles using a modified preparation method, including morphological differences in hair bulb cell layers and surface projections on root sheath cells.

This study found that treatments like abrasion, bleaching, and CETAB application affect hair fiber shear modulus differently, with moisture levels notably impacting bleached fibers more than untreated ones.