Collagen Peptide Supplement Improves Skin Wrinkles, Elasticity, and Hydration in 12-Week Trial | Research

The takeaway

Low-molecular-weight collagen peptides significantly improved skin wrinkles, elasticity, hydration, and whitening in 100 healthy adults over 12 weeks with no adverse events.

All skin parameters improved
Oral collagen peptides significantly improved wrinkle depth, all three elasticity measures, skin hydration, and whitening parameters over 12 weeks vs placebo

What the researchers found

Collagen peptides significantly improved skin roughness, wrinkle peak-to-valley values, maximum peak height, and average maximum wrinkle height vs placebo. Overall, net, and biological elasticity significantly improved at week 12. Skin hydration and whitening (melanin, erythema) also significantly improved. Zero adverse events reported.

Why it matters

Skin aging is a universal concern, and collagen peptide supplements are a massive consumer market. This controlled trial provides rigorous evidence that oral collagen peptides can measurably improve multiple objective skin parameters — not just subjective appearance.

The numbers in context

100 participants randomly assigned. Measured parameters: skin wrinkles, hydration, and elasticity.

How the study worked

Randomized, double-blinded, placebo-controlled study. 100 healthy adults randomly assigned to low-molecular-weight collagen peptides or placebo. Skin parameters measured at baseline and weeks 4, 8, and 12: wrinkles, elasticity, hydration, melanin index, and erythema index.

Who was studied

Healthy adult participants in a randomized double-blind trial

What this study cannot tell us

Relatively small sample (100 participants). Specific dose not provided in abstract. Low-molecular-weight formulation may not represent all collagen supplements. 12 weeks may not show maximum benefit. No histological confirmation of skin structural changes.

How to read the evidence

Rated moderate: well-designed double-blind RCT with objective skin measurements. Limited by sample size (100), and specific dosing details not available in abstract.

When this study was published

Published in 2024. Adds to the growing body of RCT evidence supporting oral collagen peptide supplementation for skin health.

The bigger picture

This study strengthens the evidence base for collagen peptide supplements in skin health, supporting what has largely been a consumer-driven market with limited clinical evidence. The low-molecular-weight formulation may enhance absorption and bioavailability.

Questions still open

What is the optimal dose and molecular weight of collagen peptides for skin benefits?
Do the improvements persist after supplementation stops?
How do oral collagen peptides compare to topical collagen products for skin outcomes?

Common questions

Do collagen supplements actually improve skin?

This double-blind, placebo-controlled study of 100 adults found that oral collagen peptides significantly improved wrinkle depth, skin elasticity, hydration, and evenness over 12 weeks with no side effects — providing objective evidence for skin benefits.

How long does it take for collagen supplements to work on skin?

This study measured improvements at 4, 8, and 12 weeks. Significant improvements in elasticity and other skin parameters were confirmed at 12 weeks compared to placebo.

Read the original research

Low-molecular-weight collagen peptides supplement promotes a healthy skin: A randomized, double-blinded, placebo-controlled study.

Journal of cosmetic dermatology, 23(2), 554-562

View on PubMed ↗Publisher’s paper ↗

Citation

Seong, Seol Hwa; Lee, Young In; Lee, Joohee; Choi, Sooyeon; Kim, In Ah; Suk, Jangmi; Jung, Inhee; Baeg, Chaemin; Kim, Jinhak; Oh, Dongchan; Lee, Ju Hee. (2024). Low-molecular-weight collagen peptides supplement promotes a healthy skin: A randomized, double-blinded, placebo-controlled study.. Journal of cosmetic dermatology, 23(2), 554-562. https://doi.org/10.1111/jocd.16026