The Claim

Oral supplementation with 2.5 grams of low-molecular-weight collagen peptides for six weeks has no significant effect on skin firmness (R0) or elasticity (R2, R5, R7, R9) in healthy women aged 30–65, as measured by Cutometer.

Source: Anti-Aging Effects of Low-Molecular-Weight Collagen Peptide Supplementation on Facial Wrinkles and Skin Hydration: Outcomes from a Six-Week Randomized, Double-Blind, Placebo-Controlled Trial

What the research says

Challenges is higher

Challenge is ahead, but a single strong supporting study can change this.

Supports
0score
Challenges
82score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Quantitative
1 study reviewed
In plain English

Taking 2.5 grams of low-molecular-weight collagen peptides daily for six weeks does not change skin firmness or elasticity in healthy women aged 30 to 65, according to measurements taken with a Cutometer device.

See the scientific wording

Oral supplementation with 2.5 grams of low-molecular-weight collagen peptides for six weeks does not significantly improve skin firmness (R0) or elasticity (R2, R5, R7, R9) in healthy women aged 30–65, as measured by Cutometer, despite minor non-significant trends.

Why this might work

After swallowing collagen peptides, the body absorbs them through the gut, sends them into the blood, and they reach the skin where they trigger cells to make more collagen, elastin, and a moisture-retaining substance called hyaluronic acid. This rebuilds the skin’s inner structure, making it more hydrated and elastic, but does not consistently change how firm the skin feels.

Supported mechanismbased on 1 study

What the research says

1 study

  1. Study: Anti-Aging Effects of Low-Molecular-Weight Collagen Peptide Supplementation on Facial Wrinkles and Skin Hydration: Outcomes from a Six-Week Randomized, Double-Blind, Placebo-Controlled Trial

    The study found that after six weeks of taking this collagen supplement, women’s skin became more elastic—even though firmness didn’t change much. So the claim that nothing improved is wrong.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.