The Physician's Guide to Platelet-Rich Plasma in Dermatologic Surgery Part I: Definitions, Mechanisms of Action, and Technical Specifications

In this study, iL-PRF injections produced significantly better clinical scores for androgenetic alopecia patients compared to controls, especially in those with more severe baseline conditions.

In this study, subdermal platelet-rich plasma injections significantly increased hair count and shaft caliber in individuals with androgenetic alopecia, with monthly treatments potentially offering greater benefits.

This study found that low-level laser therapy was the most effective non-surgical treatment for androgenetic alopecia, although the overall quality of evidence supporting various therapies was generally low.

This review analyzed clinical trial protocols for platelet-rich plasma preparation in hair loss treatment, finding inconsistent and insufficient reporting that complicates comparison and efficacy determination.

This study found that platelet-rich plasma injections improved hair density and diameter in women with androgenetic alopecia not responding to other treatments over 24 weeks, with no adverse events reported.

This meta-analysis reported that platelet-rich plasma injections for androgenetic alopecia may increase hair number and thickness locally, but further studies are needed to establish their overall effectiveness.

This study found that both intralesional PRP and topical tretinoin were effective and safe for treating striae distensae, with PRP being more effective and yielding higher patient satisfaction.

In this study, researchers found that homologous PRP (h-PRP) significantly increased hair density more than both nonactivated (n-PRP) and activated (a-PRP) autologous PRP in patients with androgenetic alopecia, suggesting h-PRP as a potentially more effective treatment option for hair loss.

This review discusses the diverse applications of platelet-rich plasma in aesthetic dermatology and assesses the existing literature on its effectiveness, reporting no new clinical results.

This study found that platelet-rich plasma injections significantly improved hair density, thickness, and patient satisfaction in women with female pattern hair loss compared to a placebo.

This meta-analysis suggests that local injection of platelet-rich plasma for androgenic alopecia is associated with an increased number of hairs and some increase in hair thickness, though larger studies are needed for confirmation.

This study reports that plasma rich in growth factors appeared to improve hair follicle regeneration and patient satisfaction in individuals with androgenetic alopecia, though further trials are needed.

This study observed that autologous platelet-rich plasma treatment improved hair count and density in areas with androgenetic alopecia compared to placebo, with differing outcomes based on the PRP collection device used.

This study found no significant benefit from PRP injections for treating androgenetic alopecia in men, highlighting the need for larger, well-designed trials to assess its effectiveness and safety.

This study found that a standardized PRP application protocol was effective as a coadjuvant therapy in most patients with androgenetic alopecia who did not respond to minoxidil or finasteride, based on improvements in Ebling's scale.

This study found that PRP injections improved hair density, quality, and thickness in males with androgenic alopecia compared to placebo, with reported high patient satisfaction and no major side effects.

This article proposes a mechanistic model for how platelet-rich plasma therapy may stimulate hair growth in androgenetic alopecia by promoting vascularization and activating specific signaling pathways, but it reports no new experimental results.

This study found that platelet-rich plasma did not significantly improve hair mass index or hair count in women with female androgenetic alopecia, though some patients perceived benefits in hair quality.

This study found that platelet-rich plasma was not effective in treating androgenetic alopecia in men with grade 4–6 hair loss.

In this study, the researchers observed that MMP-2 and MMP-9 significantly fluctuated with the hair growth cycle in mice, suggesting their important role in hair development.

This analysis suggests that platelet-rich plasma therapy may be promising for treating androgenetic alopecia, but further controlled trials with standardized measures are needed to confirm its efficacy.

This study found that platelet-rich plasma significantly increased hair density and anagen hair proportions in androgenetic alopecia patients, suggesting potential as an adjuvant therapy.

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 review assesses the use of platelet-rich plasma in dermatology and concludes that while there may be modest benefits for certain conditions, more evidence is needed before it can be widely recommended.

This study found that platelet-rich plasma injections significantly increased hair count and density in patients with male pattern hair loss without major side effects, suggesting it may be a safe and effective treatment option.

This review discusses the cosmetic applications of platelet-rich plasma in dermatology, highlighting its potential benefits and the need for more controlled studies.

This article discusses the challenges and possible solutions in hair restoration surgery, focusing on donor hair availability, hair survival, and concealing surgical evidence, and reports no new clinical results.

This review evaluates the therapeutic potential of platelet-rich plasma for treating non-cicatricial alopecias and suggests it may be effective, though further research is needed to confirm its efficacy.

This study found that platelet-rich plasma injections led to improvements in hair counts, thickness, and strength in patients with androgenic alopecia, showing promise as an effective treatment with no major adverse effects.

This study observed that autologous PRP and PDRN injections improved hair thickness and density in women with pattern hair loss, with combined therapy showing greater improvement in thickness than PDRN alone.

This pilot study suggests injecting platelet-derived growth factors into the scalp may offer some clinical benefits for androgenetic alopecia, though further randomized trials are needed for confirmation.

This study reported that AA-PRP injections significantly increased hair count and density in individuals with pattern hair loss compared to baseline, demonstrating their potential for enhancing hair growth.

In this study, PRP injections increased hair count and reduced hair loss in patients with androgenic alopecia not responding to minoxidil and finasteride, with high patient satisfaction reported.

This study found that PRP injections may improve hair density and reduce hair loss in patients with androgenetic alopecia without significant side effects, but further research is needed to confirm efficacy.

This study found that interfollicular injection of autologous CD34+ cell-containing PRP preparation improved hair count and thickness in patients with pattern hair loss, with better results than placental extract treatment.

This study found that autologous platelet-rich plasma increased hair growth potential by enhancing dermal papilla cell proliferation and stimulating key signaling pathways in both cell cultures and mice models.

In this mouse study, researchers found that dermal Wnt signaling/β-catenin activity is essential for fibroblast proliferation and initiating hair follicle formation by interacting with epidermal Wnt ligands.

This study found that PRP combined with dalteparin and protamine microparticles may enhance hair growth by increasing hair thickness compared to PRP alone.

This report presents no new clinical results; it discusses the application of ACell MatriStem™, a porcine urinary bladder-derived extracellular matrix, in wound healing.

In this study, β-catenin overexpression in human hair outer root sheath cells increased the expression of Pitx2, which activated the follicular differentiation pathway, suggesting Pitx2's potential role as a modulator in hair growth control.

This study found that combining minoxidil with all-trans retinoic acid additively promoted hair growth in vitro by activating certain cell survival pathways and reducing apoptosis markers more effectively than minoxidil alone.

In this study, platelet plasma growth factors from patients' autologous plasma improved follicular unit yield in baldness surgery by 15.1% compared to control areas.

Minoxidil can help grow hair and make hair follicles bigger, but it can also cause side effects.

In this study, the researchers observed that male pattern alopecia is characterized by miniature follicles, enlarged sebaceous glands, and an increased number of mast cells, without significant abnormalities in enzyme activity.