Kang & Lu (2022): Combined Effect of Microneedling and PRP for Acne Scars — A Meta-Analysis
B.K. Kang, X.R. Lu · Frontiers in Medicine, 2022PMID: 35237616
Supports: Meta-analysis of 4 randomised and 10 split-face controlled studies (472 patients) demonstrating microneedling combined with PRP is significantly more effective than microneedling alone for acne scars — 2.97x higher odds of >50% clinical improvement (P<0.001, I²=0%) and 4.15x higher patient satisfaction (P<0.001). No significant increase in severe adverse events.
Limitations: Majority of included studies were split-face non-randomised designs (10 of 14). Focused specifically on acne scars rather than broader skin rejuvenation outcomes. Moderate heterogeneity (I²=53%) in patient satisfaction analysis.
View on PubMed →Abuaf et al. (2016): Histologic Evidence of New Collagen Formulation Using PRP
O.K. Abuaf, H. Yildiz, H. Baloglu, M.E. Bilgili, H.A. Simsek, B. Dogan · Annals of Dermatology, 2016PMID: 27904271
Supports: Biopsy results demonstrated an 89.05% improvement in collagen optical density following PRP treatment, nearly double the control group — providing histological evidence for PRP's collagen-stimulating mechanism.
Limitations: Small sample size typical of histological studies. Single-centre design. Collagen density measured at one time point — long-term sustained collagen production not assessed.
View on PubMed →Lam et al. (2024): Use of PRP for Skin Rejuvenation — Review
A. Lam, E. Ranjan, S. Guttman-Yassky, R. Ahn · Skin Research and Technology, 2024PMID: 38650371
Supports: Comprehensive 2024 review confirming significant enhancements in skin pore size, texture, wrinkle reduction, and protection against UV damage with PRP therapy — validating PRP's broad skin rejuvenation benefits.
Limitations: Narrative review rather than systematic review with meta-analysis. Heterogeneity in PRP preparation protocols across reviewed studies.
View on PubMed →Gupta et al. (2019): PRP Efficacy in Hair Restoration and Facial Aesthetics — Systematic Review and Meta-analysis
A.K. Gupta, S.G. Versteeg, J. Rapaport, A.K. Hausauer, N.H. Shear, V. Piguet · Journal of Cutaneous Medicine and Surgery, 2019PMID: 30606055
Supports: Systematic review and meta-analysis demonstrating 3 monthly PRP injections exhibit significantly greater efficacy over placebo for hair density in androgenetic alopecia (mean difference: 25.61 hairs/cm², P=0.02). Also found 2-4 PRP sessions combined with traditional therapies can minimise acne scarring and improve aesthetic outcomes — supporting PRP's broad application across hair and facial rejuvenation.
Limitations: Studies used half-head design which may have influenced results due to systemic PRP effects. Data for non-hair indications (scarring, facial burns, ageing skin) are less robust in design. Focused on mild AGA — less evidence for advanced hair loss stages.
View on PubMed →*PRP London Clinic provides these references for educational purposes. Our Clinical Board regularly reviews emerging peer-reviewed literature to ensure our protocols align with the latest advancements in regenerative medicine.