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This study found that combining ablative fractional CO₂ laser therapy with hair growth factors significantly increased hair density in men with androgenetic alopecia compared to using growth factors alone.

This study found that administering melatonin to ferrets can advance the timing of fur growth and reproductive cycles influenced by daylength and hormonal control.

Sfrp2 increases during hair follicle catagen phase and slows keratinocyte growth.

In this study, oral administration of Crataegus pinnatifida extract was associated with hair growth promotion in mice by inducing anagen phase and enhancing cell signaling related to hair follicle development.

This study found that Activin B at 10 ng/mL may promote vibrissae follicle growth in mice by enhancing hair matrix cell proliferation and cell cycle progression via ERK signaling pathways.

This study suggests that icariin promotes hair follicle growth in mice by enhancing IGF-1 expression in dermal papilla cells.

This study found that Foxp1, a transcriptional factor, plays a key role in regulating hair follicle stem cell proliferation by modulating oxidative stress and the cell cycle during hair growth phases.

This study found that baicalin activates Wnt/ß-catenin signaling in human dermal papilla cells, increasing alkaline phosphatase expression, growth factor expression, and promoting hair growth in mice.

In this study, the researchers observed that MMP-2 and MMP-9 significantly fluctuated with the hair growth cycle in mice, suggesting their important role in hair development.

This study found that intrinsic reactive oxygen species drive the hair follicle cycle progression through DNA damage and repair, apoptosis, and macrophage polarization, influencing hair loss and regeneration dynamics in mice.

This study found that in Pomeranians with Alopecia X, key genes in the Wnt and Shh signaling pathways and stem cell markers are downregulated, which may explain the absence of anagen hair follicles.

This study found that chi-miR-30b-5p was more expressed in the telogen phase than in the anagen phase and inhibited dermal papilla cell proliferation by targeting CaMKIIδ.

In this study, researchers identified gremilin-2 as a highly specific gene to the dermal sheath cup, suggesting it plays a key role in maintaining its properties.

This study found that 15-dPGJ2 promotes apoptosis in human follicular keratinocytes, suggesting its potential role in developing hair loss prevention treatments through DP2 antagonism.

This study found that Bacillus/Trapa japonica fruit ferment filtrate extracts enhanced human hair follicle dermal papilla cell proliferation through the Akt/ERK/GSK-3β signaling pathway, suggesting potential benefits for alopecia treatment.

This review discusses the use of the human-on-mouse xenograft model for studying the human hair follicle cycle and emphasizes its utility for pharmacological testing, without reporting new clinical results.

This study describes the process of isolating and analyzing multipotent stem cells from mouse hair follicles for potential use in tissue engineering and regenerative medicine.

This study identified molecular elements controlling the expression and stabilization of THH protein in hair follicle cells, revealing key mechanisms that support hair shaft development in mice.

This review summarizes major growth factors that promote hair follicle growth, but it reports no new experimental findings.

This study confirms that scalp hair follicles in Chilean subjects exhibit seasonal variations, with a higher percentage of follicles in the telogen (resting) phase during the summer compared to the winter.

In this study, researchers using a multi-omics approach identified specific proteins involved in the hair follicle cycle of Inner Mongolia Cashmere Goats, finding that API5 affects apoptosis, while ribosomal proteins are highly expressed during the resting stage, providing insights into hair follicle growth and apoptosis.

This review explores the molecular controls of hair follicle cycling and highlights the challenge of developing effective treatments for common hair disorders without providing new clinical results.

This study found that inhibiting mineralocorticoid receptor signaling in female human hair follicles may promote hair growth by extending the anagen phase and encouraging keratinocyte proliferation.

This review discusses the fundamental features of hair follicle biology and its clinical importance, but it reports no new clinical results.

In this study, cyclic ADP-ribose (cADPR) treatment in human hair follicle dermal papilla cells was associated with increased intracellular calcium retention and activated anagen-related signaling without causing significant cytotoxicity, indicating its potential impact on hair growth processes.

Hair follicle stem cells and mitochondria are key for hair growth, and targeting their activity could lead to new hair loss treatments.

This review highlights the significance of animal fibers, examining the molecular mechanisms influencing hair follicle development and their impact on fiber quality and quantity, with a focus on studies involving Angora and cashmere goats.

This study presents evidence that hair matrix progenitors and the enzyme Stearoyl CoA Desaturase 1 may play a role in maintaining the dermal papilla niche via autocrine Wnt and paracrine Hedgehog signaling in mice.

In this study, γ-ray exposure in mice decreased hair follicle density and pigmentation, suggesting damage to stem cells affecting hair follicle regeneration.

This article critiques the limited clinical applicability of recognizing catagen in hair cycle studies, emphasizing its importance in histologic diagnosis and the continuum with telogen effluvium.