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This study observed that hair loss in captive rhesus macaques varies with season, sex, and housing conditions, and is significantly correlated with HPA axis activity as indicated by faecal cortisol metabolites.

This review discusses hormonal influences on hair growth and suggests that understanding hormone-gene interactions may improve treatment of hirsutism and alopecia, but reports no new clinical findings.

This review discusses the need for more research on how the chronobiological control systems regulate hair follicle cycling and reports no new results.

This study found that C. obtusa oils promoted hair growth in shaved mice and increased the expression of a hair growth regulator, VEGF, in a cell line.

This mini-review discusses human hair follicle development and summarizes genetic disorders linked to abnormalities in hair follicle morphogenesis, structure, or regeneration, but reports no new experimental results.

This review evaluates hair growth measurement methods for human scalp hair, suggesting that combining highly resolutive analytical approaches with global calibrated methods is recommended for assessing hair changes in clinical settings.

This study revealed that deficiency in the enzyme FA2H in mice affected sebaceous gland function, altered sebum composition, and caused cycling alopecia, highlighting FA2H's role in hair follicle homeostasis.

This study demonstrated that tight junction barriers exist in human hair follicles but are less tight in hair follicle keratinocytes than in interfollicular keratinocytes, highlighting claudin-1's key role in follicle barrier function and growth.

This review discusses immunohistological and immunofluorescent methods for studying the human hair follicle cell cycle, reporting no new results, and suggests its potential for advancing cell cycle research.

This study demonstrated that topical oleuropein induced hair growth in mice by activating the Wnt10b/β-catenin signaling pathway and increasing expression of several growth-related genes in skin tissue.

This article reviews the cellular dynamics affecting dermal papilla size in androgenetic alopecia and suggests targeting DP size could improve therapies, but it presents no new clinical data.

This review discusses the historical development and current challenges in in vitro hair follicle culture, highlighting a need for advanced models using cell lines and tissue engineering, and reports no new results.

In this study, intradermal injections of autologous platelet-rich fibrin matrix significantly increased hair density in patients with androgenetic alopecia at 2 and 3 months after initial treatment.

This article discusses the aging-related changes in hair structure and function, and examines various treatments like light therapy, minoxidil, and finasteride aimed at mitigating hair thinning and loss, but reports no new clinical results.

This article reviews the structure and function of hair follicles, diagnostic approaches, and treatments for nonscarring alopecias, but reports no new clinical results.

This study found that overexpression of sFRP4 in skin cells reduces Wnt signaling activation, leading to decreased melanocyte differentiation in regenerating hair follicles.

This review highlights surprising similarities between hair follicles and antler units, suggesting that a comparative study of their biology could benefit understanding in both areas without presenting new empirical findings.

This review discusses techniques and models for assessing hair growth activity but reports no new clinical findings, emphasizing the need for standardization and improved animal models.

This review discusses advancements in understanding hair cycle and inflammatory alopecias, proposing a standard classification and tiered treatment recommendations, but reports no clinical results.

This study found a significant association between low serum ferritin levels and nonscarring alopecia in women, suggesting the importance of addressing iron deficiency for treatment effectiveness.

This review examines a study showing that the balding scalp in men with androgenetic alopecia retains stem cells but lacks certain progenitor cells, suggesting new targets for future therapies; it reports no clinical results.

This study found that a combination of oral compounds improved metabolic activity, cell viability, and proliferation in hair follicular keratinocytes, with L-cystine playing a key role in protection against oxidative stress.

This article reviews pediatric hair growth issues, common causes of hair loss in children, and approaches to diagnosis, but presents no new clinical findings.

The document explains the causes, types, diagnosis, and treatments of hair loss, and its psychological impact, especially on women.

This article reviews various hair growth and hair loss treatments, noting limited new developments since FDA-approved drugs but highlights recent cosmetic surgery and potential cell-based therapies; it reports no original findings.

This chapter discusses stem cell activity in feather and hair follicles, emphasizing how stem cells maintain their population by cycling between quiescence and activation in specialized niches but reports no new results.

This review discusses current treatment strategies for alopecia and highlights the potential of lipid-based nanoparticles to improve drug delivery to the scalp and hair follicles, noting their ability to enhance skin penetration and drug stability while outlining associated challenges and the need for further research.

This review assessed the role of scalp hair Survivin protein in individuals with premature graying, exploring its potential involvement in graying-related processes and highlighting its overexpression in autoimmune diseases that may influence the survival of specific immune cell clones.

This study found that patients with alopecia areata had increased levels of serum immunoglobulin E and interleukin-13 compared to healthy controls, with additional variation in levels observed across age and weight.

In this study, a herbal oil formulation containing extracts from Martynia annua and Helianthus annuus seeds showed greater potential for hair growth in albino mice compared to finasteride and minoxidil.