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This review outlines the histological structures of the skin, highlighting species and regional differences in dermal absorption and obstacles encountered in toxicological assessments due to epidermal thickness variability, contact dermatitis reactions, and stem cell vulnerabilities.

This report describes two cases of atypical Malassezia folliculitis in immunosuppressed patients, highlighting diagnostic challenges due to non-classical presentation in non-seborrheic areas.

In this study, researchers used an evolutionary-rate-based method to identify genetic elements associated with reduced hair in mammals, finding a dichotomy between accelerated coding sequences and noncoding regulatory elements influencing hair growth.

This article reviews advanced strategies for enhancing drug delivery to cutaneous stem cells to improve treatment for skin conditions and reports no new experimental findings.

This study suggests that hair follicles may be the primary target in the onset of various skin diseases, potentially spreading to affect the surrounding epidermis.

This study explored the use of SOD-loaded niosomes as carriers to enhance the delivery of superoxide dismutase into hair follicles on guinea pig skin, finding that niosomes improved SOD penetration and preservation compared to free SOD, suggesting their potential as effective delivery vehicles.

This study concluded that shampoos sold in pharmacies generally contain fewer regulated allergens under EU law compared to those sold in mass-market stores or by mail order, and pharmacy-sold baby shampoos were allergen-free.

This article discusses the uses and techniques of trichoscopy for hair and scalp disorders and reports no new clinical results.

This article reports the first case of perforating necrobiosis lipoidica in Colombia and the 19th case worldwide in diabetic patients.

This review discusses the regenerative potential of hair follicle stem cell populations and current approaches to reconstructing folliculogenesis for alopecia therapy, but reports no new clinical results.

This review discusses the etiology, pathogenesis, clinical presentation, and treatment of frontal fibrosing alopecia, noting the lack of clinical trial data and limited observational treatment results.

This review discusses the characteristics and potential applications of epidermal stem cells in dermatology, without providing new clinical results.

This review examines the use of dermoscopy for diagnosing common hair disorders and highlights its importance, but it does not report new clinical results.

This chapter discusses the role of hormones in regulating reproductive biology and outlines how the endocrine system, particularly the brain and pituitary gland, controls these hormonal processes.

This chapter reviews the prevalence, pathogenesis, and management of hair and scalp disorders but reports no new clinical findings.

The document explains the genetic causes and characteristics of inherited hair disorders.

This study used two-photon microscopy to reveal that the dermal papilla is crucial for hair follicle regeneration and cannot be replaced by neighboring cells, providing new insights into stem cell behavior.

Acne is a common skin condition linked to diet, hormones, and genetics, and early treatment can prevent scarring.

This book reviews the various types of acne and acneiform conditions, as well as their treatment options, with expert insights from multiple fields.

This case report details a 65-year-old woman with a slowly enlarging plaque of alopecia on her frontal scalp, which was mildly indurated and slightly erythematous with overlying telangiectasias.

This article explains the significance of culturing the pilosebaceous unit for studying related diseases and skin epithelial stem cells, but it reports no new findings.

This article explores the complexity and significance of the hair follicle, emphasizing new insights into its biological roles and the involvement of p53 in follicular regression.

Small hormonal imbalances can cause significant health problems, so more sensitive testing for hormone-disrupting chemicals is needed.

This study reveals that basement membrane composition and structure in mouse hair follicles are specialized for distinct inter-tissue interactions, with laminin α5 being essential for maintaining these interfaces.

This study outlined modern approaches for using cosmeceuticals in trichology, emphasizing evidence-based medicine, personalized care, and patient safety. It proposed the H.A.I.R. model as a universal algorithm for trichological programs and suggested new educational and practical tools for specialists in trichology and aesthetic medicine.

This review study found that vesicular carriers like liposomes, niosomes, invasomes, and transferosomes can enhance drug penetration through follicles, benefiting treatments for alopecia, acne, and infections, as well as potentially facilitating systemic delivery of antihypertensive drugs and insulin.

The authors discuss that hair loss affecting the occipital scalp is understudied and may be caused by factors like movement irritation and clothing occlusion; this lack of data can lead to missed diagnoses and inadequate treatment.

This study suggests that RCM may be a promising non-invasive diagnostic tool for alopecia areata incognita, showing substantial agreement with histopathology while noting some discrepancies.

This review article examines the current understanding of frontal fibrosing alopecia, noting its prevalence in different demographics and the roles of genetic and environmental factors in its pathogenesis, while highlighting that treatment approaches remain varied and lack standardization.

This case series describes five patients with rare facial lichen planopilaris, detailing the clinical presentation and treatment of their pigmentary changes and scarring alopecia.