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This study found that intralesional triamcinolone acetonide injections using a needleless injector led to rapid hair regrowth in patients with limited alopecia areata, while lasting growth was rare in alopecia totalis.

This review discusses the use of microneedling with a dermaroller for treating acne scars, hair loss, and wrinkles, and reports no new clinical results.

This study found that adding platelet-rich plasma to microneedling improved outcomes for atrophic acne scars more than microneedling alone, according to both quantitative and qualitative assessments.

This study found that using an electrical microneedling device enhanced the penetration of liposomal melanin-fluorescein into hair structures and widened the follicular infundibulum in ex vivo human skin models.

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

This study found that both microneedle delivery and intradermal injection of platelet-rich plasma were similarly effective for treating androgenetic alopecia, but microneedle delivery caused significantly less pain.

This chapter reviews the combined use of platelet-rich plasma and microneedling for cosmetic enhancement but reports no clinical results; the authors highlight existing uses and suggest potential synergistic benefits in dermatology.

This review discusses the potential applications of injectable platelet‐rich fibrin in various conditions and reports no new clinical results; the authors highlight its favorable use in comparison to existing treatments.

Combining microneedling with platelet-rich plasma enhances skin repair and collagen production but may not offer significant extra benefits.

This literature review conducted a comprehensive analysis of existing studies on micro-needling mesotherapy in dermatology and aims to offer a practical guide for its clinical application, though it provides no new experimental findings.

PEMA handles on syringes improve comfort and efficiency in hair transplant procedures.

This review highlights the use of microneedling devices and patches to deliver cosmetic agents through the skin, noting their applications in skin rejuvenation and safety considerations such as potential skin irritation and infection.

In this pilot study, patients with atrophic acne scars experienced clinical improvements and high satisfaction after receiving three biweekly microinfusions of human insulin into their skin.

This study developed and tested continuous implanters for dermal papilla cell aggregates, finding that the bar-cartridge type implanter is the most effective design for continuous cell implantation in androgenetic alopecia research.

This narrative review reported that intradermal injection of autologous platelet-rich plasma showed objective improvement and increased patient satisfaction in treating periorbital wrinkles, though the authors noted the need for further rigorous studies to confirm these findings.

This study found that injectable platelet-rich fibrin (i-PRF) enhances hair follicle regeneration in vitro by promoting human dermal papilla cell proliferation, migration, and trichogenic inductivity, with varying effects depending on concentration.

This study found that micro-needling with cosmeceuticals or platelet-rich plasma significantly improved wrinkles, skin laxity, scar softening, and hair growth over 12 months, with minimal side effects, and that the best results occur with pigment and platelet massaging between 5 to 30 minutes post-treatment.

This study found that both intradermal injection and derma roller techniques for QR678Neo® hair regrowth therapy improved androgenetic alopecia symptoms, with intradermal injections showing non-significantly better video-microscopic outcomes but more pain and erythema associated with derma rollers.

In this study, post-treatment with DCO was found to speed up epidermal wound healing after micro-needling of 3D skin models while maintaining the treatment's immunostimulatory benefits, potentially optimizing aftercare and reducing patient recovery time.

This review highlights the potential of microneedle devices in dermatology for conditions like skin aging and autoimmune skin diseases, emphasizing their ability to facilitate targeted drug delivery by creating temporary skin pathways.

This study developed a low-viscosity triamcinolone acetonide serum, used with a derma stamp microneedling device, to improve targeted treatment of alopecia areata, reporting favorable drug solubility, spreadability, and permeation to hair follicles, while maintaining skin safety.

This abstract does not provide research results or a summary of findings, but only lists author affiliations and contact information.

In this chapter, the authors discuss how microneedling and platelet-rich plasma are effective for cosmetic purposes with minimal downtime, noting potential mild side effects and the necessity for multiple treatments.

This study reports that a single intradermal injection of autologous adipose-derived stem cells improved visible aging signs such as wrinkles and pore size on facial skin for over a year in eight patients, with in vitro data suggesting muscle involvement in the rejuvenation process.

This study found that intradermal injections of autologous cell-free fat extract significantly improved the condition of postinflammatory hyperpigmentation patients, with high patient satisfaction and minimal adverse effects.

This special journal issue reviews various uses of injectables in aesthetic medicine, including treatment innovations with neuromodulators and dermal fillers, but reports no new empirical findings.

This study developed a delivery platform using hyaluronic acid-based dissolvable microneedles with nanoliposomes containing kopexil and kopyrrol, which showed improved hair regeneration for treating androgenetic alopecia in vivo at lower dosages compared to minoxidil.

This study found that Plinest injections improved skin hydration and elasticity in the face, neck, and décolleté and were well-tolerated, with high patient satisfaction over a 4-month follow-up.