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This review explores the role of hormones in pilosebaceous units and associated skin disorders, focusing on androgen action, without presenting new clinical findings.

This review summarizes recent research on the molecular properties and functions of L-PGDS and PGD2, but reports no new findings, highlighting their pathophysiological roles and guiding future studies.

This study found that altering levels of SFRP1 in human dermal papilla cells affects cell function and regulates Wnt/β-catenin signaling or telomerase activity, suggesting that targeting SFRP1 could potentially offer a new approach to treat hair loss diseases.

This study found that PDLLA filler treatment may help combat age-related hair thinning by reducing oxidative stress and enhancing hair follicle function in both cell and animal models.

Adipose-derived stem cells can be transformed into hair-forming cells using specific extracellular vesicles, offering potential for hair regeneration therapies.

This study suggests that enhancing endocannabinoid tone with an EMT-inhibitor may have anti-inflammatory effects and slightly increase sebaceous lipid production, which could be beneficial for dry skin conditions.

In this study, co-grafting human keratinocytes with murine dermal papilla-enriched cells produced hair follicle-like structures, but without regular hair formation, suggesting anomalous folliculogenesis.

This study found that dihydrotestosterone (DHT) may shorten the hair growth cycle through mechanisms like cell-cycle arrest and β-catenin downregulation in rat hair follicle cells.

This study found that exosomes derived from dental pulp mesenchymal stem cells (DPSC-Exos) significantly promoted hair regrowth and follicle density in a mouse model of androgenetic alopecia, showing similar efficacy to minoxidil by activating pathways that improve follicular vascularization and dermal papilla cell function.

This study reports that eccrine sweat glands in mice predominantly develop on the footpads, offering a reference for skin research involving genetically engineered mice.

This abstract discusses the role of advanced glycation end-products in aging-related skin damage, but does not provide new findings on their impact on alopecia.

This study suggests that pulsed wave photobiomodulation could be a promising treatment for androgenetic alopecia by enhancing dermal papilla cell function through specific light parameters, particularly frequency.

This study found that transplanting trichogenous dermal cells significantly enhanced the restoration of in vivo-damaged hair follicles in a nude rat model, with a combination of dermal papilla and sheath cells proving more effective than either cell type alone.

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.

This study concluded that the CXCL12–CXCR4 signaling pathway significantly contributes to hair loss in androgenetic alopecia and alopecia areata by promoting inflammation and fibrosis, whereas inhibiting this pathway can restore hair growth and follicle health.

This review discusses the expression patterns and biochemical roles of Msx and Dlx genes during development but does not present new research findings.

This study found that colchicine treatment significantly reduced hair fiber elongation in cultured hair follicles and altered protein expression and activity in dermal papilla cells, suggesting a role for the ubiquitin-proteasome system in its effects.

This study found that platelet-rich plasma may influence the proliferation of human hair dermal papilla cells by affecting gene expression related to the cell cycle.

This study found that Cacumen Platycladi volatile oil promotes dermal papilla cell proliferation and enhances hair growth in mice, outperforming minoxidil and showing no obvious cytotoxic effects.

In this study, dermal papilla cells from rat vibrissae showed potential for treating CNS injuries by secreting neurotrophic factors and promoting neuronal differentiation more effectively than bone marrow mesenchymal stem cells.

This review highlights that microRNAs (miRNAs) play crucial roles in hair follicle development and cycling in cashmere goats, detailing recent advances in understanding their regulatory functions and potential applications in improving cashmere fiber quality and diagnosing hair disorders.

This study observed structural and molecular changes in Ganxi goat skin that adapt to hot and humid climates and suggested that GSDMA might play a role in hair follicle regulation and skin homeostasis, though further research is needed to confirm its function in environmental adaptation.

In this study, researchers used single-cell RNA sequencing to map the hair follicle microenvironment in fine-wool sheep, identifying specific cell types and gene expressions that influence wool fiber diameter, with dermal papilla cells playing a significant role in hair follicle development.

In this comprehensive review, researchers reported that macromolecules like type I collagen, keratin, and ceramides enhance hair health by improving follicular function and increasing hair density, strength, shine, and resilience, as shown in various in vitro, animal, and human studies.

This literature review discusses exosomes' potential as biomarkers and therapeutics for skin issues, hair loss, and wound healing, but notes that their full functions and standardized applications remain inadequately understood.

This review examines how skin organoids, derived from stem cells, are constructed to simulate skin functions and are pivotal in wound healing and regeneration, highlighting their promising roles in both research and therapeutic applications.

Melanoma risk tools need improvement, a gene mutation causes a hair disorder that might be treated by managing cell stress, a potential therapy for a skin-ear disorder involves blocking cell channels, skin wrinkling may indicate lung aging regardless of smoking, and oxidative stress might contribute to common baldness.

This study found that normal murine hair follicles are direct targets for melatonin bioregulation, expressing receptors that are regulated in a hair cycle-dependent manner, influencing keratinocyte apoptosis.

This descriptive longitudinal study conducted in a Kolkata hospital found that intense pulsed light treatment significantly improved hirsutism in patients, as evaluated by trichoscopy and visual analog scores, demonstrating its effectiveness and safety for hair removal, independent of medical treatment.

Different substances affect hair and skin cell growth in various ways, with some promoting and others inhibiting cell proliferation.