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This article illustrates various hair shaft defects and suggests that dermatologists can diagnose most of them using light microscopy and polarization without needing advanced imaging techniques.

This study found that as Korean women age, their hair density, diameter, tensile strength, and lustre decline, while grey hair ratio and certain sterol contents increase, suggesting unique ageing features compared to women in other countries.

This study observed a high degree of plasticity in somatosensory axons innervating Merkel cells in mouse skin, finding that both axons and Merkel cells underwent dynamic remodeling, with their interactions influencing axonal branching and maturation.

This study found that adding dithiodiglycolic acid to the hair straightening process decreased chemical damage and preserved the structural integrity of the hair matrix compared to using thioglycolic acid alone.

This study found that chemically modifying human hair through esterification or disulfide reduction and alkylation affects the hair's viscoelastic properties, including stability, integrity, and response to moisture.

This study reports that in systemic sclerosis, CD34+ dermal fibroblasts transition to CD34−, podoplanin+, and CD90+ fibroblasts across the dermis, suggesting a role in unchecked fibrosis.

This study suggests that diffuse alopecia areata initially involves an intense inflammatory attack during the anagen phase, progressing through different hair cycle stages with specific shedding patterns.

This review discusses the use of trichoscopy for diagnosing mimickers of patterned hair loss and assessing donor sites before hair transplant surgery, and reports no new clinical results.

This study found that aging in Korean individuals is associated with changes in hair diameter and surface structure, as observed through atomic force microscopy.

Androgenic alopecia causes hair follicle degradation and skin restructuring, but some hair elements remain.

Atomic Force Microscopy is a more accurate way to assess hair damage and the effect of cosmetic treatments.

This review discusses past research on the chemical and physical properties of human hair, focusing on structural analysis and mechanical property measurements with methods like SEM and tension tests, but adds no new findings.

This review discusses the aging-related changes in hair properties, their impact on styling, and potential interventions, without providing new clinical results.

This article reviews various methods and introduces new imaging technologies to assess the effects of hair shaping treatments on hair chemistry and structural integrity, without reporting clinical results.

This study identified dynamic changes in DNA methylation associated with different growth stages in Tan sheep, which may offer insights to retain their valuable curly fleece as they age.

This study found that a new 12-point scale provided a more precise measurement system for evaluating hair damage and improvement after hair care product use compared to a 5-point scale.

Tiger tail banding and hair abnormalities are reliable indicators for diagnosing trichothiodystrophy.

This article reports electron microscope studies on the structure of hair and wool, but it does not present new clinical findings.

This study suggests that human keratin fiber matrix has a well-defined nano-scale grainy structure rather than being amorphous, with grain size influenced by chemical treatments, temperature, humidity, and follicle-level factors.

This study observed that the keratinization pattern of trichilemmal cysts in two Japanese women may originate from the proliferation of the outer root sheath in the follicular isthmus of anagen hairs.

The study observed increased melanin and signs of skin aging in melasma-afflicted skin, with strong CK10 expression in the upper basal epidermis, potentially linked to excessive epidermal cell differentiation and aging.

In this study, significant changes in hair fiber dimensions were observed between pre- and post-operative states in males undergoing abdominal surgery, with values normalizing by the fourth post-operative week.

This study found that chemical hair dyes caused more significant microstructural damage to hair than high-temperature perms, as observed using a single-detector OCT system.

This study observed that following hair transplantation, patients exhibited prominent perifollicular erythema and scaling one month after surgery, whereas by six months, accentuated follicular ostia and varying hair shaft abnormalities were consistently noted.

This review discusses the genetic disorder, monilethrix, characterized by fragile, brittle hair and its inheritance patterns, and reports no new clinical results.

This study found that areola formation in mice requires a combination of pregnancy hormones and mechanical strain, with individual stimuli causing only modest changes in epidermal proliferation and connective tissue remodeling.

Among Chinese women, this study observed that hair density decreases and scalp erythema increases with age, with most aging features like hair diameter and sebum content peaking in their 40s.

This study reports that 91.4% of pregnant women in south India experienced pigmentary alterations, highlighting various skin changes occurring during pregnancy.

This study found that the weak tensile strength of pili torti hair may result from loose keratin intermediate filaments due to abnormalities in disulfide bonds.

In this study of dogs with mucocutaneous lesions caused by various dermatological conditions, the researchers observed notable changes in haemato-biochemical parameters and trichographic features, including anaemia, elevated platelet counts, and significant telogen phase hair involvement.