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This review reports that natural compounds show promise in slowing skin photoaging by targeting cellular pathways in keratinocytes and fibroblasts. However, comprehensive clinical studies are needed to verify their efficacy and safety.

In this research, the authors found that green-synthesized zinc oxide nanoparticles (GS-ZnONPs) exhibited antibacterial activity against Staphylococcus species isolated from alopecia patients, but also showed cytotoxic effects on human dermal fibroblast cells at a 400 mg/mL concentration.

HA-iMSC-EVs can improve skin aging by boosting cell growth and restoring collagen and elastin.

In this study, transient transfection of the HIF-1α gene into fibroblasts led to increased VEGF expression, which may enhance the growth and anagen phase of human hair follicles in vitro.

In this clinical trial, patients with lichen planopilaris treated with the oral TYK2 inhibitor deucravacitinib showed significant improvement in PGA, LPPAI, and Skindex-16 scores over 24 weeks, with transcriptomic analyses indicating decreased inflammatory and immune pathway activity post-treatment.

This study found that culturing fibroblasts on stiffer substrates mimicking fibrotic wounds led to an aligned EDA fibronectin matrix with thinner fibers and decreased YAP activity, suggesting disrupted signaling that might be restored to promote regenerative wound repair.

This study reported that the n-butanol fraction of Perilla frutescens extract, particularly rosmarinic acid, showed potential for hair regrowth and anti-androgenic activity in male mice, suggesting it as a possible treatment for androgenetic alopecia.

This study found that secretory proteins in DFCM play crucial roles in regulating nerve restoration by forming significant protein interaction networks during the wound repair process.

In this study, araliadiol, a plant-derived compound, exhibited senomorphic effects in three dermal fibroblast senescence models, suggesting its potential as a topical treatment to mitigate skin aging by reducing certain senescence-related markers and increasing procollagen type I content.

Finasteride reduces testosterone conversion, progesterone lessens this, and levamisole enhances finasteride's effect.

This study found that TSC2-null fibroblast cells from TSC skin hamartomas can induce hair follicle formation and hamartomatous changes in keratinocytes, with active mTOR signaling observable in a mouse xenograft model.

In this study, blue light-irradiated nanovesicles derived from human adipose-derived stem cells enhanced dermal fibroblast proliferation and extracellular matrix synthesis, improving skin maintenance and hair follicle regeneration, suggesting a novel therapeutic strategy for skin and hair disorders.

Wnt and SHH pathways help form hair follicles by coordinating cell processes.

In this study, the ethanol extract of Puerariae Radix was found to promote proliferation and ERK activation in human dermal fibroblasts, suggesting its potential as a new cosmetic ingredient.

In this study, researchers developed a new hydrogel incorporating fibroblast growth factor 21 that improved wound healing in diabetic mice by reducing inflammation and enhancing skin repair, suggesting strong potential for future clinical application in diabetic wound management.

This study demonstrated that Stellaria media extract may enhance wound healing in vitro by promoting cell migration and proliferation, with notable antioxidant and antimicrobial properties.

This study found that hair follicle-derived dermal stem cells and bone marrow mesenchymal stem cells have similar growth, differentiation capabilities, and surface marker expressions, suggesting hair follicles could be accessible sources for mesenchymal stem cells.

Androgens don't directly affect hair cell growth or protein production.

This study reported that applying a nanosilica-bromelain-curcumin complex improved wound healing and hair regrowth in mice with second-degree burns compared to no treatment.

This article reviews the cellular and molecular processes of acute and chronic wound healing, emphasizing the need for collaboration between researchers and clinicians to advance therapeutic solutions; it presents no new clinical results.

This study found that SIRT1 negatively regulates fibroblast activation and excessive scar formation, suggesting it may be a promising drug target for treating hypertrophic scars.

This study reports that using activated platelet-rich plasma releasate in the preparation of bioengineered hair follicle germs enhanced follicular gene expression and significantly improved hair regeneration in vitro.

This study reports that a collagen scaffold with p-Coumaric acid showed promising wound-healing effects in diabetic wound models by enhancing tissue regeneration and balancing collagen turnover.

Minoxidil helps hair growth by improving blood vessel function.

In a laboratory study, Grateloupia elata extract demonstrated antioxidant and anti-aging effects by scavenging free radicals, inhibiting collagenase and elastase, increasing procollagen production, and reducing MMP-1 secretion, suggesting its potential use in functional cosmetics.

In this study, testing Annurca apple extract on human follicle dermal papilla cells indicated its potential to prevent patterned hair loss by reducing oxidative stress and increasing factors involved in hair growth.

This study found that MAPK/ERK signaling plays a key role in driving tissue regeneration in spiny mice and suggests potential for reversing fibrosis to promote regeneration in mammals.

This review discusses the diverse roles and potential skin health benefits of melatonin, highlighting its anti-inflammatory, antioxidant, and protective effects but reports no new clinical results.

This article discusses the potential role of melatonin in protecting skin against stress and maintaining homeostasis, based on its local synthesis and various protective functions, but presents no new clinical results.

This comprehensive review suggests that CD44 signaling plays a significant role in post-natal skin wound healing and scar formation, with potential for therapeutic approaches targeting CD44 to shift from fibrotic scarring towards regenerative healing, including wound regeneration and hair neogenesis.