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This review discusses the multiple layers of environmental controls on hair stem cell homeostasis and suggests that targeting these layers could offer safer regenerative medicine therapies without directly using stem cells.

This study, published in "Más Dermatol," explores how multiple factors contribute to hair loss, such as genetics, hormones, oxidative stress, microinflammation, and emotional stress, and highlights interventions targeting these causes to improve hair regrowth and quality of life.

This review discusses historical and recent advances in understanding the embryonic organizer's role in patterning during development, including molecular pathways and future research challenges, but reports no new experimental data.

This study found that Ishophloroglucin A from brown seaweed may treat androgenic alopecia by inhibiting 5α-reductase and promoting hair growth-related factors in human dermal papilla cells.

This review examines androgenetic alopecia, detailing its causes and current treatments, but reports no new clinical results; the authors emphasize understanding its complexity for personalized therapy development.

This study found that Wnt/β‐catenin signaling influences the hair follicle regeneration process by prompting quiescent stem cells to enter the cell cycle and is necessary for maintaining the stem cell pool.

This review discusses Scalp Threading as a promising treatment for androgenic alopecia, with hair growth results comparable to multiple applications of minoxidil, but reports no new clinical results.

This review discusses mesenchymal–epithelial interactions in hair follicle development and cycling, highlighting recent insights without reporting new experimental results.

This review discusses the molecular mechanisms of androgenetic alopecia and evaluates current and potential treatments, highlighting the limitations of minoxidil and finasteride and exploring newer approaches like growth factors and cytokines, topical 5-alpha-reductase inhibitors, and platelet-rich plasma injections as more effective and safer alternatives.

Human prostate cells produce more WISP1/CCN4 when there's not enough oxygen.

This study discovered a novel interaction between the vitamin D receptor and LEF1, essential for normal Wnt signaling in keratinocytes, which is crucial for regular hair cycling.

This study found that irisin, a myokine, increases hair growth by activating the Wnt/β-catenin pathway, enhancing cell proliferation and hair shaft elongation in both human cell and mouse models.

This study found that dermal papilla cell-derived exosomes may enhance hair follicle regeneration during wound healing by boosting fibroblast hair-inducing capacity and activating the Wnt/β-catenin signaling pathway.

This study found that applying TPA to mice accelerated hair follicle regeneration by activating Akt and Wnt/ß-catenin signaling pathways, involving hair follicle stem cell proliferation.

In this study, researchers observed that the YH complex, made from Astragalus membranaceus and Cinnamomum cassia, promoted hair regrowth and increased hair shaft thickness in mice, potentially through increased growth factors and Wnt/β-catenin signaling, suggesting its use for treating various forms of hair loss.

In this study, Nec-1s was found to promote hair growth and may target necroptosis and the Wnt/β-catenin pathway for potential treatment of hair loss.

This review examines the origins and mechanisms of tumor initiation in common skin cancers, but does not present new experimental findings; it emphasizes the need for further research on cancer stem cells.

In a laboratory setting, this study found that Biotrinine® dry extract activated hair follicle growth pathways and increased certain growth factor secretions in human dermal papilla cells, suggesting potential benefits for treating chronic hair loss.

This study found that linoleic acid from Malva verticillata seed extracts may promote hair follicle cell growth and counteract hair loss signaling in a lab setting.

This study found that PlncRNA‑1 may enhance the proliferation and differentiation of hair follicle stem cells by upregulating the TGF‑β1-mediated Wnt/β-catenin signaling pathway.

In this study, researchers found that sesamin, a component of sesamum, modulated the AR-MAPK-Wnt signaling pathway in DHT-stimulated HaCaT keratinocytes, demonstrating potential multi-target activity against molecular events in androgenetic alopecia.

This study reported that exogenous R-spondin-1 can restore hair follicle neogenesis in adult mouse cells, highlighting differences in gene expression and signaling pathways between fetal and adult dermal papilla cells.

This study found that polyacetylene compounds in Panax ginseng extracts may inhibit neurotrophin receptor binding, suggesting potential therapeutic benefits for alopecia and other hair growth disorders.

This study found that FZD2 is crucial for hair follicle formation and postnatal growth in mice and has a novel role in regulating early epidermal development, including stratification and cornification.

This study found that testosterone and dihydrotestosterone can induce growth factors from dermal fibroblasts, promoting keratinocyte proliferation and differentiation, which may contribute to sex hormone-related acne development.

This study found that activation or inhibition of Wnt/β-catenin and Notch signaling pathways in rats can alter wound healing, possibly by affecting epidermal stem cell activity and keratinocyte behavior.

This study explored the effects of DPP, a 15-PGDH inhibitor, on human follicle dermal papilla cells damaged by dihydrotestosterone and observed that DPP enhanced wound healing, reduced reactive oxygen species, and increased hair growth in ex vivo human hair follicle cultures.

This study found that BMPs can counteract the inhibitory effects of androgens on hair follicle stem cell differentiation, highlighting their critical role in the pathway dysregulation seen in androgenetic alopecia.

This study observed that Ginseng and Albizia extracts, when used together, protected human dermal papilla cells from oxidative stress-induced senescence, and inhibited genes that suppress hair growth, indicating their potential in preventing age-related hair density reduction.

This study found that inhibiting 11β-HSD1 can partially reverse the negative impact of glucocorticoids on dermal papilla cells in human scalps, suggesting potential for treating stress-related hair loss.