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This study found that the multifunctional FEA-PCEI dressing significantly accelerated wound healing, reduced scar formation, and promoted hair follicle neogenesis while providing antibacterial and anti-inflammatory benefits.

This study found that an injectable ceria-based nanocomposite hydrogel improved wound healing and epithelium regeneration, including hair follicle and adipocyte tissue formation, in full-thickness skin wound models.

In this study, an injectable hydrogel incorporating antibacterial agents was shown to effectively heal wounds and promote hair follicle and capillary regeneration, offering a promising approach for skin tissue engineering.

In this study, researchers developed a biocompatible, ROS-responsive hydrogel to deliver miR-665 locally, effectively reducing inflammatory signaling and promoting hair follicle regeneration in an alopecia areata mouse model, offering a promising approach for targeted treatment.

This study found that a newly developed biocompatible hydrogel, responsive to reactive oxygen species, enabled targeted delivery of miR-665, significantly promoting hair regeneration and reducing T-cell infiltration in a mouse model of alopecia areata, suggesting a promising strategy for treating this condition.

In this study, dynamic hyaluronic acid hydrogels with properties like injectability and controlled degradation were developed to enhance healing and remodeling of diabetic wounds, achieving effects such as inflammation reduction, increased angiogenesis, and neovascularization, leading to complete wound healing.

This study reported that an injectable hydrogel based on platelet-rich plasma and laponite improved wound healing in diabetic and normal rats by enhancing angiogenesis and macrophage polarization.

The hydrogel dressings speed up healing and reduce scarring.

In a study on diabetic mice, researchers developed a protein-based hydrogel that leverages zinc ions and the natural compound phellopterin to promote cutaneous nerve regeneration, angiogenesis, and tissue remodeling in diabetic wounds, highlighting its potential for advanced wound therapy.

This review discusses the potential of silk fibroin-based injectable hydrogels as next-generation biomaterials for regenerative medicine, exploring their therapeutic advantages, challenges, and future clinical applications.

The hydrogel improves hair growth treatment by enhancing drug delivery and promoting follicle repair.

This study observed that both polynucleotides (PN HPT™) and platelet-rich plasma (PRP) improved hair density and quality in men with androgenetic alopecia, with comparable outcomes and no significant adverse events.

A 2 mm needle is effective and precise for skin injections.

This study demonstrated that the IVL-DrugFluidic® platform is effective for mass-producing finasteride-loaded polymeric microspheres for long-acting injectables, maintaining stable drug release without an initial burst for a month.

Chicken feather gene mutation helps understand human hair disorders.

This review highlights the potential of microneedles as a pediatric-friendly method for delivering proteins, vaccines, and diagnostics transdermally, noting their ability to penetrate the skin's barrier and suggesting future applications in other parts of the body.

This article introduces a needleless microjet injector using laser pulse energy for tattoo pigments in scalp micropigmentation, highlighting an almost painless procedure without anesthesia.

This study reviews the evolution and modifications of microneedle drug delivery systems, initially designed for percutaneous use, now expanded for targeting a variety of tissues and organs such as ocular, oral mucosal, and gastrointestinal, suggesting widespread future applicability.

In this study, a newly developed nanoparticle-loaded hydrogel wound dressing demonstrated significant antibacterial, antioxidant, anti-inflammatory, and proangiogenic activities, effectively reducing pain and promoting healing in a murine burn wound model while preventing infection by *Staphylococcus aureus*.

This research highlights a hydrogel system that could significantly improve diabetic wound healing by releasing ibuprofen to both suppress inflammation and promote tissue regeneration, indicating a strong potential for future clinical use.

This study found that patients experienced less pain when using a 1-mL syringe compared to a 3-mL syringe, despite both having the same needle size.

This review discusses various mechanical isolation procedures for tissue-like stromal vascular fraction, such as the nanofat procedure, and highlights the need for controlled trials to assess their regenerative effectiveness.

This paper reviews the state of knowledge on injectable cryogels, highlighting their unique properties such as shape-memory and mechanical integrity, which allow for minimally invasive delivery via needles and potential applications in oncology and regenerative medicine.

This review examines the potential of swellable microneedles in drug delivery and diagnostics, highlighting innovations and challenges in their use for chronic disease treatment, but noting that issues like physiological responsiveness and long-term stability still require research.

This study found that injectable finasteride microspheres provided a sustained drug release with a minimal initial burst in albino rabbits compared to oral suspension.

This study reported that a subcutaneous injection formulation using PLGA microspheres to release finasteride stably achieved sustained monthly drug delivery without burst release in beagle dogs, with a dose of 16.8 mg identified as optimal for potential first-in-human trials.

This review discusses the potential of microneedles as a pain-free drug delivery method that improves medication distribution while addressing issues associated with traditional transdermal formulations.

This study found that both human and rat dermal papilla spheroids can induce hair follicle neogenesis, but larger spheroids increase inductivity without significantly affecting hair fiber diameter.

This review examines the design strategies for creating conductive hydrogels with adjustable properties for various biomedical applications, highlighting their potential for supporting cell growth, wound healing, drug delivery, tissue regeneration, and biosensing.

This study found that a dopamine-methacrylated hyaluronic acid hydrogel enhances the efficacy of adipose-derived stem cells in promoting skin regeneration, potentially involving the Notch signaling pathway.