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This study found that optical coherence tomography provides highly reproducible and less variable measurements of hair shaft thickness compared to standard light microscopy, offering a promising noninvasive tool for clinical practice.

This abstract provides no results; it is a website notification about cookies and general access to JAMA content.

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.

In this study, Scalp Immersion Proxigraphy (SIP) was shown to produce more accurate measurements of linear hair growth rate than crude phototrichogram techniques, suggesting SIP's suitability for clinical trials monitoring hair growth.

This study found that low image resolutions allow expert clinicians to detect alopecia, but higher resolutions are necessary for identifying scarring and vellus hair, which may inform future image processing algorithms in dermatology.

The researchers presented new, practical photography protocols for hair loss assessment that clinicians can use even without formal medical photography units, aiming to standardize high-quality imaging in both clinical and research settings.

This study found that human scalp hair follicles produce neurohormones and responded to GHRH stimulation by prolonging hair growth, suggesting a functional peripheral HPS neuroendocrine signaling axis in the skin.

This study found that the loss of a functional hr gene in mice leads to premature and abnormal hair follicle regression, disrupting normal hair cycling and architecture.

Scientists made glow-in-the-dark dots from human hair that can detect iron, prevent counterfeiting, and reveal fingerprints.

Graft-versus-host disease is a complication where donor immune cells attack the recipient's body, often affecting the skin, liver, and gastrointestinal tract.

This review explores the roles of histamine receptors H2R, H3R, and H4R in treating various dermatoses but reports no new clinical outcomes.

Understanding hair structure and growth is key for diagnosing hair diseases accurately.

This study identified a new cis-regulatory element in the mouse Hr gene that influences its expression in skin and brain cells, highlighting a complex molecular network involved in hair follicle formation.

This study identified molecular elements controlling the expression and stabilization of THH protein in hair follicle cells, revealing key mechanisms that support hair shaft development in mice.

This proof-of-concept study reported that a new, ultra-fast, one-step immunohistochemistry method improved the interpretation of Mohs surgery slides, particularly for poorly differentiated tumors.

This review discusses the integration of ultrasound in dermatology for improved lesion visualization and diagnosis, highlighting recent technological advancements like handheld devices and high-frequency probes, and reports no clinical results.

This article discusses the professional skills and judgment required for maximizing hair restoration results and reports no new clinical findings.

This review discusses the role of the hairless protein (HR) in alopecia and cancer, noting its potential importance in cancer cell growth and survival, and reports no new experimental results.

This microscopy study examined the non-keratinous regions of human hair fibers, revealing detailed morphology that could help understand how external influences affect hair structure.

This health hazard evaluation by NIOSH identified problems with ventilation and environmental control at a resort spa, potentially contributing to reported employee health complaints.

In this study, researchers found that trichoscopy helps detect early signs of female-pattern hair loss before it is visible, highlighting its importance for monitoring and managing the condition.

This descriptive longitudinal study conducted in a Kolkata hospital found that intense pulsed light treatment significantly improved hirsutism in patients, as evaluated by trichoscopy and visual analog scores, demonstrating its effectiveness and safety for hair removal, independent of medical treatment.

This study created a humanized mouse model of hereditary vitamin D-resistant rickets that lacks alopecia, indicating the mutant receptor's potential to explore the syndrome's characteristics beyond vitamin D binding.

People with X-linked hypohidrotic ectodermal dysplasia have no sweat ducts and less, thinner hair.

This study found that contrast enhanced phototrichogram (CE-PTG) significantly improved detection of various hair types and growth stages in androgenetic alopecia compared to standard PTG and was comparable to biopsy analysis.

This study involved using smartphone applications and low-cost trichoscopy devices to assess various hair and scalp conditions, with diagnoses confirmed through detailed imaging during remote consultations and in-person evaluations.

This study clarified and quantified the concept of hair transparency using a validated mathematical model based on measurable hair properties and consumer perception data from stylists in Japan and China.

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.

This study found that the new HCC additive enhances the permeation of pigments and active ingredients into hair, suggesting potential use in developing functional cosmetic hair products.