# Collagen Supplementation Hair Randomized Trial: What the Evidence Says
Canonical: https://www.migaku.app/guides/collagen-supplementation-hair-randomized-trial-evidence-review
Category: evidence-review
Summary: Collagen Supplementation Hair Randomized Trial has 2 source documents in the current Migaku evidence database. The strongest available sources in this first p
Last reviewed: 2026-06-27
Reviewed by: Migaku Evidence Review
# Collagen Supplementation Hair Randomized Trial: What the Evidence Says

## Quick Answer

Collagen Supplementation Hair Randomized Trial has 2 source documents in the current Migaku evidence database. The strongest available sources in this first pass are randomized trial, 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 randomized trial, 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 |
| --- | --- | ---: | --- | --- |
| Comparative effects of MKARE® eggshell membrane and hydrolyzed collagen as nutricosmetics on skin biophysical properties: a randomized clinical trial | randomized trial | 2 | 2026-01-14 | 10.3389/fnut.2025.1689701 |
| Collagen, Curcumin, and Glutathione to Enhance Dermal Health in Aging Women with Declining Estrogen Levels -A Narrative Review. | preclinical study | 4 | 2026-04-29 | 10.1007/s13555-026-01731-z |

## What The Sources Report

- Its decline is directly associated with cutaneous dehydration, underscoring its vital function in maintaining skin hydration. [González-Rodríguez Yaiza (2026); evidence level 2]
- Such supplementation has been associated with multiple benefits, including the prevention of sagging and stretch marks, improved skin elasticity and hydration, stimulation of collagen synthesis, strengthening of connective tissues, cartilage, bones, and muscles, reduction in visible signs of aging, and promotion of cellular regeneration. [González-Rodríguez Yaiza (2026); evidence level 2]
- Nutraceuticals represent promising strategies for preventing, delaying and addressing premature aging of the skin, especially as women advance in years (particularly after 30 years of age, when estrogen levels begin to decline, and remarkably after menopause when estrogen production ceases from the ovaries). [Arbex P (2026); evidence level 4]
- This review is part of a larger project, and we present this companion review, which provides a detailed examination of the literature beyond polyphenols and/or phytoestrogens for estrogen-deficient skin. [Arbex P (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

There is trial evidence in the current set, but population and intervention details still matter. For collagen supplementation hair randomized trial, the next editorial step is to add more targeted sources and separate strong findings from early or indirect evidence.

## 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

- González-Rodríguez Yaiza (2026). Comparative effects of MKARE® eggshell membrane and hydrolyzed collagen as nutricosmetics on skin biophysical properties: a randomized clinical trial. DOI: 10.3389/fnut.2025.1689701. PMCID: PMC12846929. PMID: 41613921. License: CC BY 4.0. https://pmc.ncbi.nlm.nih.gov/articles/PMC12846929/
- Arbex P (2026). Collagen, Curcumin, and Glutathione to Enhance Dermal Health in Aging Women with Declining Estrogen Levels -A Narrative Review.. DOI: 10.1007/s13555-026-01731-z. PMCID: PMC13237322. PMID: 42056376. https://pmc.ncbi.nlm.nih.gov/articles/PMC13237322/

## 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.