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In this study, researchers examined the skin of neonatal rabbits and found that most hair follicles were in the terminal stage, with hair shafts protruding through the epidermis, but noted the absence of sweat glands.

This study suggests that proteins CHI3L1 and CXCL5, secreted by recovery-state dermal papilla cells, may promote hair growth by stimulating the proliferation of outer root sheath cells.

This study suggests that APC collagen peptides may accelerate hair growth and promote overall hair health by enhancing cellular proliferation and activating specific signaling pathways in human and mouse models.

In this study, researchers found that IGFBP‐rP1 levels were lower in individuals with androgenic alopecia compared to healthy controls, and subcutaneous injection of IGFBP‐rP1 showed potential in slowing hair loss progression in a mouse model by affecting the hair cycle transition.

This study suggests that targeting mitophagy to regulate mitochondrial dysfunction and inhibit inflammasome activation could offer a novel therapeutic approach for alopecia areata.

In a mouse model, this study found that intradermal keratin injection stimulated hair growth and suggested its potential use for treating hair loss by promoting hair regeneration.

This study found that shikimic acid significantly promoted hair growth in a mouse model and enhanced hair shaft elongation in human hair organ culture, suggesting its potential as a treatment for alopecia.

In this study, the researchers observed that post-radiation hair follicle repair in 3D architecture occurs through independent, long-range cell movements along the basal surface, resembling 2D healing processes.

This study found that metformin, an AMPK activator, promoted hair growth in vitro by enhancing the AMPK/β-catenin signaling pathway in dermal papilla and outer root sheath cells.

This research found that metformin promoted hair growth in vitro by activating the AMPK/β-catenin signaling pathway in dermal papilla and outer root sheath cells.

In this study, low-dose 453 nm blue light appeared to enhance hair growth by interacting with specific photoreceptors in the outer root sheath cells.

LED light helps human hair root cells grow and prevents them from dying by activating specific growth pathways.

This pilot study suggests that autophagy is crucial for anagen maintenance in human hair follicles, and targeting this process may help manage hair growth disorders.

This study found that EGF, IGF-Ⅰ, and IGF-Ⅰ R are extensively expressed in mink skin and hair follicles, suggesting these genes play crucial roles in their development.

This study reports on a patient whose symptoms, including trichoepitheliomas and clinical alopecia, may suggest a new syndrome possibly linked to myasthenia gravis.

This study reported that a skin equivalent model using human outer root sheath cells and fibroblasts showed the formation of structures similar to human dermis and epidermis within two weeks after transplantation into mice.

A new method was developed to create better skin models for healing and reconstruction.

This study suggests that minoxidil sulfate and pinacidil do not activate K channel currents in hair follicles, indicating their hair growth effects may occur through other mechanisms like increased blood flow.

In this study, the vitamin D analogues 1 alpha,25-dihydroxy-vitamin D3 and calcipotriol were found to thin the living cell layer and affect differentiation marker expression in organotypic cultures of human outer root sheath cells.

This study found that human hair follicle cells suppress immune activity, with somatostatin playing a significant role, suggesting potential applications for treating inflammatory hair loss conditions.

This study reported that K14 expression patterns and keratin filament organization in human skin's hair follicles differ from those in the epidermis, indicating distinct differentiation programs.

Vitamin D3 affects cell differentiation in specific skin areas.

In this study, the researchers developed an in vitro model that maintains human hair follicles to grow at in vivo rates and observed that factors like EGF and IGF-I influence hair follicle growth and catagen entry.

This study found that hair loss in an Olmsted syndrome mouse model with a Trpv3 mutation was linked to premature keratinocyte maturation, affecting hair follicle structure and function.

This study found that Sox10 may play a role in early hair follicle development and cycling, as it is expressed in specific regions of the hair follicle during different phases of the hair cycle in mice.

This study suggests that Sox13, although dispensable for epidermal development, serves as a marker for early hair follicle development in Sox13-LacZ knock-in mice.

This study found that the MD-3 antibody significantly improved the survival of hair follicle allografts in nonhuman primates by reducing T-cell infiltration.

BTNL2 helps protect hair follicles from immune attacks.

This study observed that in human scalp hair follicles, BTNL2 expression is lower in stressed conditions, which correlates with increased cytotoxic activity by gamma/delta and CD8+ T cells, suggesting a possible role for BTNL2 in controlling immune responses relevant to alopecia areata.

This study found that electrical epilation in organ-cultured human scalp skin perturbs hair follicles by causing inflammation, impairing melanin production, and possibly inhibiting post-epilation hair re-growth.