The plain-language read
For significant improvement rate, CO2 laser + topical insulin, CO2 laser + PRP, and microneedling + PRP showed the most favorable rankings. For VAS, lower values indicated less pain; microneedling + PRP, MFR + bFGF, and YAG laser were associated with relatively lower pain rankings. Fractional CO2 laser combined with subcision or PRP showed the most consistent benefits, whereas CO2 laser + topical insulin and MFR + bFGF appeared promising but require further validation.
- For significant improvement rate, CO2 laser + topical insulin, CO2 laser + PRP, and microneedling + PRP showed the most favorable rankings.
- Fractional CO2 laser combined with subcision or PRP showed the most consistent benefits, whereas CO2 laser + topical insulin and MFR + bFGF appeared promising but require further validation.
Relevant if you're working with glycolic acid for acne and scarring.
What this means for your routine
If you're targeting acne, this research supports adding glycolic_acid to your AM/PM routine.
Translated from this study's findings, not a personal prescription. Pair with your existing protocol and your practitioner's guidance.
Technical Summary, For Professional Reference
Clinical context
1. Aesthetic Plast Surg. 2026 Sep;50(17):7308-7334. doi: 10.1007/s00266-026-06165-8. Epub 2026 Jul 10. Laser, Microneedling, and Combination Therapies for Moderate to Severe Acne Atrophic Scars: A Systematic Review and Network Meta-Analysis.
Full abstract→
1. Aesthetic Plast Surg. 2026 Sep;50(17):7308-7334. doi: 10.1007/s00266-026-06165-8. Epub 2026 Jul 10. Laser, Microneedling, and Combination Therapies for Moderate to Severe Acne Atrophic Scars: A Systematic Review and Network Meta-Analysis. Ou Y(#)(1), An G(#)(2), Liang J(1), Zhang W(1), Li M(1), Luo Y(1), Zhang P(1), Liu S(3). Author information: (1)Department of Plastic and Aesthetic Surgery, Affiliated Hospital of Shaanxi University of Chinese Medicine, Deputy No. 2, West Weiyang Road, Xianyang, 712000, Shaanxi, China. (2)Northern Theater Command Disease Control Center, Shenyang, Liaoning, China. (3)Department of Plastic and Aesthetic Surgery, Affiliated Hospital of Shaanxi University of Chinese Medicine, Deputy No. 2, West Weiyang Road, Xianyang, 712000, Shaanxi, China. 13359298884@163.com. (#)Contributed equally OBJECTIVE: To compare the efficacy and safety of laser therapies, microneedling/radiofrequency microneedling, chemical reconstruction or peeling, subcision, fillers, and combination treatments for moderate-to-severe atrophic acne scars using systematic review and Bayesian network meta-analysis. METHODS: PubMed, Embase, the Cochrane Library, and Web of Science were searched for randomized controlled trials published from January 1, 2010 to August 10, 2025. Two reviewers independently screened studies, extracted data, assessed risk of bias, and evaluated evidence certainty using GRADE. Outcomes included ECCA score, Goodman-Baron scar score, significant improvement rate, significant satisfaction rate, and pain visual analogue scale (VAS). Bayesian network meta-analysis was performed in R, and sensitivity analyses were conducted by excluding small-sample and high-risk-of-bias studies where applicable. RESULTS: Fifty-six randomized controlled trials involving 1488 patients and 34 interventions were included. Most participants were enrolled in split-face or self-controlled studies. In the primary SUCRA analysis, MFR + bFGF ranked highest for ECCA score improvement, followed by CO2 laser + ASCE and microneedling + glycolic acid. CO2 laser + subcision and CO2 laser + PRP ranked highest for Goodman-Baron score improvement and patient satisfaction. For significant improvement rate, CO2 laser + topical insulin, CO2 laser + PRP, and microneedling + PRP showed the most favorable rankings. For VAS, lower values indicated less pain; microneedling + PRP, MFR + bFGF, and YAG laser were associated with relatively lower pain rankings. Sensitivity analyses generally supported the robustness of CO2 laser-based combination therapies, although ECCA and VAS rankings were more sensitive to network connectivity and limited evidence. CONCLUSION: Combination therapies generally outperformed monotherapies for moderate-to-severe atrophic acne scars. Fractional CO2 laser combined with subcision or PRP showed the most consistent benefits, whereas CO2 laser + topical insulin and MFR + bFGF appeared promising but require further validation. Treatment selection should consider scar type, Fitzpatrick skin phototype, downtime, pain, adverse-effect risk, and patient preference. Larger long-term randomized trials with standardized outcomes are needed. LEVEL OF EVIDENCE I: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 . © 2026. Springer Science+Business Media, LLC, part of Springer Nature and International Society of Aesthetic Plastic Surgery. DOI: 10.1007/s00266-026-06165-8 PMID: 42429955 [Indexed for MEDLINE] Conflict of interest statement: Declarations. Conflict of interest: The authors declare that they have no conflicts of interest to disclose. Ethical Approval: No ethical approval was required for this article. Consent to Participate: This article is a systematic review and meta-analysis of previously published studies. No new human participants were recruited by the authors. For all included studies, it is assumed that informed consent had been obtained by the original investigators in accordance with ethical standards. Consent for Publication: Not applicable.
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