# Green Tea Extract Skin Aging Meta-analysis: What the Evidence Says
Canonical: https://www.migaku.app/guides/green-tea-extract-skin-aging-meta-analysis-evidence-review
Category: evidence-review
Summary: Green Tea Extract Skin Aging Meta-analysis has 2 source documents in the current Migaku evidence database. The strongest available sources in this first pass 
Last reviewed: 2026-07-25
Reviewed by: Migaku Evidence Review
# Green Tea Extract Skin Aging Meta-analysis: What the Evidence Says

## Quick Answer

Green Tea Extract Skin Aging Meta-analysis has 2 source documents in the current Migaku evidence database. The strongest available sources in this first pass are mixed biomedical and public-health sources, so conclusions should be framed as evidence-aware guidance rather than medical advice.

## Key Takeaways

- This page is generated only from sources stored in the Migaku evidence knowledge base.
- Current evidence mix: 1 narrative review, 1 preclinical study.
- Claims should be interpreted with the source type, study design, population, and publication date in mind.
- This article is educational and does not replace care from a qualified clinician.

## Evidence Map

| Source | Evidence type | Level | Date | Identifier |
| --- | --- | ---: | --- | --- |
| Green tea as a cosmetic agent for skin aging: A scoping review | narrative review | 3 | 2025-01-01 | 10.22038/ajp.2025.25449 |
| Oral whole-leaf matcha partially attenuates UV-induced dermoepidermal disruption and collagen phenotype alterations in a rat model of repeated photoaging | preclinical study | 4 | 2026-06-10 | 10.3389/fmed.2026.1813454 |

## What The Sources Report

- UV-B radiation causes increased production of ROS which can cause DNA damage and initiation of photo-oxidation, especially in the epidermis of the skin through augmentation of cellular ROS levels. [Febrinasari Ratih Puspita (2025); evidence level 3]
- Free radicals can damage fatty acids and eliminate elasticity as a result of oxidative stress caused by an imbalance of free radicals and antioxidants in cells (Phaniendra et al., 2015; Aguirre-Cruz et al., 2020; Ayda et al., 2022). [Febrinasari Ratih Puspita (2025); evidence level 3]
- Thus, any stress associated with handling or gavage was expected to be distributed similarly across groups. [Zorlu Özge (2026); evidence level 4]
- Supplementary Figure 1 post-hoc Body weight increased progressively in all groups throughout the study. [Zorlu Özge (2026); evidence level 4]

## How To Read This Evidence

Evidence level 1 generally reflects systematic reviews or meta-analyses. Level 2 includes randomized trials, guidelines, or public-health guidance. Level 3 usually reflects observational or narrative-review evidence. Level 4 is weaker or early-stage evidence. The level is a sorting aid, not a final quality grade.

## Practical Interpretation

For green tea extract skin aging meta-analysis, the current source set is useful for orientation, but it is not yet broad enough for strong claims. Use cautious language and keep conclusions close to the cited sources.

## Limits Of This First Pass

This is a small-batch MVP article. It uses the first ingested sources for this topic and should be expanded with more targeted searches, license review, and human editorial checks before being treated as a definitive review.

## References

- Febrinasari Ratih Puspita (2025). Green tea as a cosmetic agent for skin aging: A scoping review. DOI: 10.22038/ajp.2025.25449. PMCID: PMC12441187. PMID: 40969419. License: https://creativecommons.org/licenses/by/3.0/ http://creativecommons.org/licenses/by/3.0/ This is an Open Access artic.... https://pmc.ncbi.nlm.nih.gov/articles/PMC12441187/
- Zorlu Özge (2026). Oral whole-leaf matcha partially attenuates UV-induced dermoepidermal disruption and collagen phenotype alterations in a rat model of repeated photoaging. DOI: 10.3389/fmed.2026.1813454. PMCID: PMC13290547. PMID: 42359064. License: CC BY 4.0. https://pmc.ncbi.nlm.nih.gov/articles/PMC13290547/

## Safety Note

Health information can change, and individual risk depends on medical history, medications, pregnancy status, age, and diagnosis. Talk with a qualified clinician before changing treatment, supplement, or medication routines.