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This simulation study found that higher cannabis exposure in a virtual population was associated with increased hair shedding severity and reduced follicular density, but these results are based on modeled data and cannot establish causal relationships.

This study developed a non-destructive X-ray fluorescence technique to quantitatively analyze elemental content in human hair and constructed a database of element concentrations in healthy Swedish, Caucasian individuals.

This letter discusses potential pathogenetic links among frontal fibrosing alopecia, androgenetic alopecia, and fibrosing alopecia in a pattern distribution and reports no new clinical findings.

The method effectively maps lead and zinc in hair, aiding understanding of heavy metal exposure risks.

This article reviews the botanical characteristics, traditional and modern medicinal uses, and market potential of Prunus mira, but reports no new clinical findings.

This article discusses a market study in Bogotá identifying women with hair problems as the target audience for hair products containing quinoa extracts, and reports no new research findings.

This review explores the mechanisms and clinical applications of thymosin β4, highlighting its potential in various medical fields, but it presents no new research findings.

This commentary discusses the potential of natural volatiles in medical aromatherapy, highlighting their ability to synergize with other drugs and modulate biological processes, but reports no new results.

This study reported that compound 16 (olean-12-en-3beta-ol, cinnamate) from Merremia peltata showed potential as an androgen receptor antagonist, suggesting it may benefit alopecia treatment based on molecular docking and ADME-Tox predictions.

This article discusses the use of the Hamilton and Norwood system by hair restoration surgeons to classify stages of androgenetic alopecia and presents no new clinical results.

This letter to the editor raises concerns about minoxidil, an arterial vasodilator also used for androgenic alopecia, noting that overdose can cause severe side effects such as distributive shock, pulmonary edema, and myocardial ischemia.

This review discusses the multifaceted actions of metformin in polycystic ovary syndrome and reports no new clinical results; the authors emphasize metformin's potential benefits in both cardiometabolic and reproductive aspects of PCOS.

In this study, different types of catagen in the C57BL/6 mouse model exhibited varying effects on hair follicle melanocytes and melanin distribution, with spontaneous and dexamethasone-induced catagen showing pigment incontinence, while cyclophosphamide-induced catagen retained dendritic melanocytes but increased ectopic melanin.

In this study, researchers found that trichothiodystrophy hair brittleness is linked to abnormalities in sulfur content and structural organization, making it prone to breakage.

The study improved understanding of keratin fiber structure by showing consistent microfibril diameter but varying distances and electron density profiles.

This study reported successful and cosmetically acceptable repigmentation of leukoderma in three patients using minigrafts of normally pigmented, autologous skin.

This review discusses the historical development of hair straightening products for Afro-ethnic hair and reports no new research findings.

This study found that mutations in phosphorylation sites on the PIN3 protein disrupt its phosphorylation and subcellular trafficking, affecting auxin transport and root growth in a cell-type-specific manner.

This study reveals that human hair follicles transition between active and dormant states stochastically, challenging the idea of a cyclical automaton controlling hair growth.

This study found that enhanced expression of the Sonic hedgehog gene via an adenovirus vector accelerated hair regrowth in mice with chemotherapy-induced alopecia.

This review explores research on nanoformulations for enhancing the topical delivery of herbal medicines, noting potential benefits like improved bioavailability and sustained delivery, and emphasizes the need for safety and toxicity guidelines in developing these novel drug delivery systems.

This article reviews the use of the Nd:YAG laser for hair removal and reports no new research findings.

This review discusses the critical parameters for MALDI IMS sample preparation in skin analysis and highlights its applications in wound healing, neoplasia, and infection research, but reports no new clinical results.

This study discovered that the lipid in human hair follicles is mainly located in the hair cuticle and keratinized inner root sheath, distinct from sebaceous and epidermal lipids, suggesting a potential role as a "hair barrier.

This study found statistically significant patterns in hair morphology and ultrastructure linked to biogeographic ancestry among European, African, and East Asian populations.

This review discusses micro-segmental hair analysis for forensic toxicology, emphasizing its potential to provide detailed drug distribution profiles and its application in investigations, while noting the method's limitations and future perspectives.

This review discusses various aspects of hair follicle biology and highlights unresolved questions and potential new research avenues, but presents no new experimental findings.

This review discusses the role of PIN-FORMED 2 and related signaling pathways in root hair growth regulation and reports no new experimental findings.

This study used micro-segmental hair analysis to identify the day of drug intake and suggested differing uptake mechanisms for co-administered drugs based on their properties.