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This review examines the chemical composition and potential health risks of hair straighteners, but it reports no new findings and emphasizes the importance of understanding hair fibre structure for safe use.

This article reviews various diagnostic tools for hair disorders, describing methods ranging from invasive to noninvasive, but reports no new research findings or clinical results.

This review explores theories on the evolution of hair from synapsid scales and glands, proposing mechanisms supported by comparative studies, but reports no new experimental findings.

This article discusses the evaluation and management of common nonscarring hair loss conditions and reports no new clinical results.

This study found that a solution containing 0.5% Camellia japonica placenta extract increased scalp moisture and reduced sebum content, dead keratin, and erythema in adult females, suggesting potential as a scalp treatment.

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

This study examines the pathogenetic mechanisms and morphological changes in androgenetic alopecia, highlighting the role of genetic and hormonal factors like dihydrotestosterone in hair follicle changes, which is crucial for developing effective diagnostics and treatments.

This study described a Scottish family with hidrotic ectodermal dysplasia featuring variable symptoms such as hypo/oligodontia, thin hair, and heat tolerance, and concluded they exhibited overlapping traits with Clouston syndrome.

The document explains how hair follicles develop, their structure, and how they grow.

This review discusses the essential role of linoleic acid in preventing deficiency symptoms and enhancing skin function, but notes that scientific knowledge on its potential therapeutic use for skin diseases remains limited.

This review explains that linoleic acid deficiency can lead to skin and growth issues but notes that such deficiencies are rare in well-nourished Western populations; it reports no new clinical findings.

In this study, using sterile gloves during hair restoration surgery did not reduce scalp contamination compared to clean gloves due to the natural microbiome of the scalp.

This study suggests that hair transplantation to new nonscalp sites affects the growth and survival rates of transplanted hairs, while the diameter remains unchanged.

This study found that a hair follicle-like structure forms in nude mice when hair papilla cells are mixed with hair follicle epithelium and implanted, but not with dermal sheath cells or fibroblasts.

This study found that L-cystine-modified rabbit hair fibers had improved dye adsorption and spinnability, due to changes in secondary structure and surface characteristics.

This paper reviews the evolution of skin appendages and keratin-associated proteins among amniotes, proposing a model for their genetic divergence without new experimental results.

This review suggests that hyperspectral and terahertz imaging show promise in non-invasively assessing scalp changes associated with hair loss, but further validation is needed for clinical application.

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

This review discusses age-related changes in scalp skin and their potential effects on hair follicle aging, but reports no new clinical results, calling for further investigation.

This study found that genes in the human keratin-associated protein 1 family may have evolved mainly through gene duplication of cysteine-repeat motifs.

In this study, testosterone and certain metabolites were highly effective in promoting sebaceous structure growth in the female hamster flank organ, while others had limited or no effect.

This case study documents the co-existence of trichorhinophalangeal syndrome and loose anagen syndrome in a patient, highlighting a previously unreported association between the two conditions.

A young man was unexpectedly diagnosed with basal cell carcinoma after a scalp examination and confocal microscopy.

In this case report, a nine-year-old boy with an unusual scalp nodule was found to have trichofolliculoma, a rare skin tumor, emphasizing the importance of considering this diagnosis in children and using dermoscopy and histopathology for accurate identification and treatment.

This study utilized 3D ultra-high frequency ultrasound to effectively detect different disease phases of alopecia areata by visualizing hair follicle structures and identifying unique pathological signs, offering a promising non-invasive diagnostic tool that surpasses conventional methods.

This review covers current knowledge of tricoscopy's applications in diagnosing and monitoring scalp and hair disorders but presents no new clinical results.

Mother and son diagnosed with a rare genetic hair loss condition with no effective treatment.

Children's hair loss can be caused by many factors, including autoimmune diseases, emotional stress, genetics, and infections, with treatment and prognosis varying.

This article discusses various hair diseases and emphasizes their significant impact despite affecting a small area, but does not report new clinical findings.

This study found that a new 3D image analysis method from SEM images enables quick and accurate measurement of cuticle scale heights in hair fibers.