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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 study found that inhibiting 5α-reductase in molluscs provokes a specific shell morphology, suggesting gastropods might have unique 5α-reductase substrates absent in vertebrates.

This review discusses platelet-rich plasma and microneedling for alopecia areata, reporting promising small-scale findings but no new results, and suggests further trials to determine efficacy and specific disease subtype suitability.

This study found that plasma rich in growth factors (PRGF) as an adjuvant to follicular unit extraction (FUE) surgery may enhance hair graft performance and reduce post-surgical inflammation and pain in hair loss patients.

This study found that an extract from the root of Sophora flavescens Aiton significantly improved hair growth in patients with androgenetic alopecia over 6 months.

This study on feather pattern formation in chicken skin found that inhibiting gap junctional intercellular communication can lead to the emergence of new feather buds in specific spatial patterns, suggesting that GJIC may facilitate Turing-type periodic patterning by propagating inhibitory signals over long distances.

This review examines the challenges of hair follicle regeneration and outlines strategies for bioengineering human hair follicle models, without presenting new experimental results.

This article discusses the potential for topical caffeine as a natural alternative for treating androgenetic alopecia due to its ability to penetrate skin, but it reports no new clinical findings.

This study found that plasma rich in growth factors was a safe and more effective treatment for androgenetic alopecia than topical minoxidil, showing greater improvements in hair growth phases.

This study found that mutant mice with the we/we wal/wal genotype exhibit significant defects in hair shaft structure and epidermis stratification, correlating with postnatal alopecia symptoms.

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.

Chicken feather gene mutation helps understand human hair disorders.

This review discusses the use of platelet-rich plasma in treating androgenetic alopecia and alopecia areata, observing overall positive clinical responses without identifiable complications, and reports no new clinical results.

In this study, transplanted hair follicles from different body sites showed changes in morphology and immune status, suggesting their ability to adapt and function in new recipient areas such as the scalp or eyebrows.

This review discusses the role of dermal papilla cells in hair follicle morphogenesis and regeneration and reports no new results; the authors emphasize the importance of these cells in hair growth and pigmentation regulation.

This study found that the penta-peptide Gly-Pro-Ile-Gly-Ser increased the proportion of thick hair and improved baldness appearance in Japanese men with androgenetic alopecia.

In this study, researchers found that the shape of polygonal domains, such as squares and triangles, significantly impacts Turing pattern formation, with domain geometry affecting the stability and type of bifurcations observed in simulations.

This study found that mesenchymal cells in mouse and chicken embryonic skin undergo a process of migration driven by tissue tension and WNT secretion, influencing their dispersal and integration into dermal condensates.

This study found that stem cells can temporarily act as non-professional phagocytes during hair cycle regeneration by clearing apoptotic cells through a process requiring local lipids and retinoids for activation, providing insights into their dual role in maintaining tissue integrity.

In this study, researchers observed that exposure to low-frequency electromagnetic fields enhanced hair follicle regeneration and formation of hair follicle-like structures in bioengineered skin in nude mice.

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 article discusses the development of skin patterns during embryogenesis and postnatal life, linking them to genetic, environmental, and mathematical factors, but presents no new empirical findings.

This review discusses the genetic basis of ectodermal dysplasia, highlighting that identification of gene pathologies enhances diagnosis and supports prenatal DNA testing, but it reports no new clinical results.

This review discusses the potential use of platelet-rich plasma and microneedling for alopecia areata and reports encouraging findings, but no new clinical results; future research is needed to validate these treatments.

This review discusses the role of flavonoids and Nod factors in the symbiosis between legumes and rhizobia and reports no new results; the authors argue this knowledge could enhance sustainable agriculture.

This chapter reviews traditional and tissue-engineered treatments for skin defects and discusses advances in bioengineered skin constructs, but it presents no new experimental results.

This abstract lacks results; it aims to understand hair follicle regulation mechanisms but does not report specific findings or data.

In this review, researchers summarize key factors in constructing skin organoids, including cell source and assembly methods, and emphasize advances such as air-liquid interface culture for improving tissue development, aiming to guide standardized protocols and future clinical applications.

This review outlines the transition from simple hair follicle organoids to immune-competent microphysiological systems, addressing limitations in replicating native hair follicle immune features and discussing their applications in disease modeling and regenerative medicine.

This review discusses hair follicle organoids as emerging models for studying hair biology and disorders, emphasizing their promise for bridging basic research and clinical applications, but reports no new results.