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The researchers reported that yak hair fibers undergo macromolecular conformational changes and partial slippage of macromolecules during stretching, confirming this as the main stretching mechanism when the stretching ratio is large.

This study in a Lithuanian veterinary clinic observed diverse histomorphological skin changes in alopecic dogs caused by various rare diseases, including hyperkeratinization and pigmentation disorders.

In this study, autopsies of children who suffered fatal abuse revealed stress-associated markers like telogen effluvium and thymus involution, which may help pathologists identify chronic abuse cases.

This study observed distinct changes in the ultrastructure of Hexi cashmere goat hair follicles throughout the year, highlighting stages with specific cellular and structural characteristics.

Hair treatments like bleaching increase friction by exposing tiny pores on the hair surface.

This study found that micro-computed tomography (micro-CT) was highly effective for analyzing the cross-sectional geometry of hair fibres, including the medulla in highly curled hair, but less effective than scanning electron microscopy for surface details.

This study observed that physiological skin changes, especially pigmentary, were common in pregnant females, while specific dermatoses and fungal infections also occurred less frequently.

This study found that most hair shaft abnormalities can be accurately diagnosed using a handheld dermoscope in a clinical setting.

This study found that specific and nonspecific skin changes can serve as important indicators for diagnosing thyroid diseases, even in patients who appear clinically normal.

In this study, researchers used advanced four-dimensional optical imaging techniques to observe changes in skin afflicted with acne, finding increased epidermal thickness, keratinized hair follicles, inflammation, and aggregated blood flow, helping to distinguish between inflammation and reparative phases of acne progression.

This study observed that while hair density generally increased after PRP-based treatments for nonscarring alopecia, the extent of improvement and associated biomarker changes varied widely among individuals.

This study examines the role of T. verrucosum in bovine dermatitis, revealing various pathological skin changes such as hyperkeratosis, necrotic hair follicles, and severe neutrophil aggregation in cows from Diyala Governorate.

This study found that extensive cuticle damage from diperisophthalic acid oxidation did not alter the tensile properties of human hair, suggesting that these properties are mainly due to the cortex rather than the cuticle.

This study reports that among men, skin surface hydration and pH change with age, but transepidermal water loss and sebum production show less variation.

This study found that rabbit skin histology revealed changes in collagen and elastic fibers after soaking, dehairing, and tanning processes, impacting fiber tightness and fur removal.

This study investigated age-related changes in female scalp dermal fibroblasts, finding alterations in gene and protein expressions associated with fibrosis and senescence, which could potentially affect hair follicle health and contribute to aging-related hair changes.

This study found that applying a cosmetic active ingredient improved the Young's modulus of chemically damaged human hair fibers, suggesting enhanced mechanical properties compared to untreated fibers.

This study observed that hair density and growth rates vary by location and age, and the presence of thin hairs predominates in younger women with mild patterned hair loss.

This study identified distinct and diverse fibroblast populations in female scalp cells that lose their signature and identity with age, highlighting significant age-related changes, such as increased fibrosis, DNA damage, and senescence, which may affect scalp dermal support for healthy hair follicles.

In this case study, a 74-year-old woman improved her scalp hair condition by reducing chronic rubbing, leading to hair regrowth without ongoing abnormalities after behavior modification.

This study observed that both Factor XIIIa+ dermal dendrocytes and microvasculature size decreased with scalp aging and that alopecia changes resembled stress-induced premature senescence.

In this case report, a 5-year-old boy presented with an itchy patch of hair loss in the frontotemporal region, with trichoscopy revealing specific hair shaft features, such as black dots and corkscrew hairs.

This study observed that hair density and thickness were significantly reduced across multiple scalp sites in South Korean women with hair loss, highlighting potential patterns that could aid in differentiating hair disorders.

This article reviews the classification of hair shaft abnormalities, outlining their diagnostic features, but does not present new research findings.

In this proteomic analysis, the researchers found that transitioning from crimped to straight wool in Tan sheep is linked to significant changes in wool protein expression, revealing distinct patterns of keratins and keratin-associated proteins that could influence wool quality and economic value.

This study found that fibroblasts from mature skin showed significantly reduced mechanical force production compared to young skin fibroblasts, suggesting age-related changes in cellular mechanical properties.

This study used confocal Brillouin microscopy to observe that a decrease in tissue compressibility occurs during the development and regeneration of axolotl limbs, suggesting mechanical changes linked to regeneration stages undetectable by fluorescence microscopy.

This study found that oxidative hair dyes altered the color and ultrastructure of Caucasian hair but did not significantly affect the hair's breaking strength.