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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 study in Hexi cashmere goats found that secondary follicle activity increases with time, and Hoxc13 expression varies significantly across different growth stages, suggesting a role in follicle activity.

This preliminary study observed that melanoblasts are preserved in the white hair follicles of segmental vitiligo lesions.

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 found that both human and rat dermal papilla spheroids can induce hair follicle neogenesis, but larger spheroids increase inductivity without significantly affecting hair fiber diameter.

This study reports that structural abnormalities in the inner root sheath of hair follicles may cause the hair shaft to be loosely attached in patients with loose anagen hair syndrome.

This study found that radiofrequency radiation from mobile phone use may increase DNA damage in hair follicle cells of the ear canal, with greater exposure duration linked to higher damage levels.

This review discusses the latest understanding of androgenetic alopecia, including stem cell niches in hair follicles, and highlights emerging treatments like growth factors and platelet-rich plasma without new clinical findings.

This study found that using layer-by-layer encapsulation techniques on dermal papilla cells can support their function and may help treat hair loss when used in conjunction with freshly isolated epidermal cells.

This review discusses hair follicle stem cells for wound healing and reports no new clinical results, noting their potential but emphasizing the need for further understanding and safety in clinical applications.

This report describes a case of widespread Porokeratotic eccrine and hair follicle nevus in a 15-year-old woman with keratitis-ichthyosis-deafness syndrome, involving both eccrine ostia and hair follicle infundibula.

This study validated the differential stripping technique on hairless rat skin and found that the P-08–016 formulation delivered more finasteride to the epidermis and appendages compared to P-10–008.

This study found that exosomes from hair follicle mesenchymal stem cells overexpressing lncRNA H19 promoted diabetic skin wound healing by enhancing cell proliferation, migration, and reducing pyroptosis.

This study found that melatonin treatment in adult cashmere goats increased cashmere yield and improved fibre quality without negatively affecting the hair follicle development or cashmere production in their offspring.

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.

In this study, the researchers developed a new protocol using human-induced pluripotent stem cells to efficiently create skin hair follicle organoids, which may aid in optimizing hair follicle growth and exploring treatments for alopecia.

This study compared microneedling combined with platelet-rich plasma and microneedling with minoxidil for treating androgenetic alopecia in men, finding both approaches effectively improved hair density and alopecia grade.

In this study, researchers developed a polyherbal hair growth oil using botanical substances and base oils like coconut and castor oil, finding it to be stable, non-irritating, and suggesting potential hair-growing properties through mechanisms such as scalp blood flow improvement and anti-inflammatory effects.

This study investigated the molecular mechanisms behind cashmere goat coat types by analyzing gene expression during hair follicle development stages, identifying regulatory pathways involved in metabolism, immune response, and the quiescent state of follicles, potentially aiding in genetic selection for improved cashmere production.

This study found that anisotropic osmolyte solutions may improve hair follicle turnover and condition in both in vitro and in silico models, as well as in human volunteers with hair disorders.

This article discusses the potential of using ultrasonography to assess hair and follicular pathology non-invasively and reports no new clinical results.

This study found that multi-hair follicles naturally orient perpendicular to the radial line from the crown whirl, suggesting that perpendicular transplantation of grafts could replicate this natural appearance.

In this case study, a 62-year-old woman with severe hyperandrogenism underwent a clomiphene test, which suggested an ovarian origin for her condition, leading to the discovery of a Leydig cell tumor after a bilateral oophorectomy.

In this study, type I interferon response-related genes activated by RIG-1 and IL-17 signaling pathways were significantly up-regulated in both hair follicles and skin tissues affected by chronic discoidal lupus erythematosus.

This study found that type I interferon response-related genes activated by RIG-1 and IL-17 pathways were significantly up-regulated in hair follicle and skin samples with chronic discoidal lupus erythematosus.

This review discusses the composition and role of the hair follicle microbiome in health and disease, highlighting that our understanding remains limited and stressing the need for more comprehensive studies.

This study reports the case of a 12-year-old girl who developed psoriatic alopecia after increasing her dose of the TNF-α inhibitor adalimumab for Crohn's disease, emphasizing psoriatic alopecia as a phenomenon associated with these medications.

A new surgical technique using vellus hair grafts effectively treated vitiligo without causing unwanted hair growth.

This case study reports that a 6-year-old girl with pediculosis capitis experienced scalp pruritus, pustules, crusting, excoriation, and cicatricial alopecia but showed a good clinical response to permethrin and antibiotics, with no lice detected afterward.

This case report suggests that transplanted hair follicles may be more resistant to alopecia areata than native hair, potentially offering new insights into the condition's pathophysiology and treatment options.