The Claim
Daily oral supplementation with 2.5 grams of low-molecular-weight collagen peptides for six weeks increases skin hydration by 34% in healthy women aged 30–65, as measured by corneometry, compared to no significant change in placebo recipients, indicating a direct effect on stratum corneum moisture retention.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Taking 2.5 grams of low-molecular-weight collagen peptides daily for six weeks increases skin hydration by 34% in healthy women aged 30–65, as measured by corneometry, compared to a placebo.
See the scientific wording
Daily oral supplementation with 2.5 grams of low-molecular-weight collagen peptides for six weeks increases skin hydration by 34% in healthy women aged 30–65, as measured by corneometry, compared to no significant change in placebo recipients, indicating a direct effect on stratum corneum moisture retention.
Small collagen fragments from supplements pass through the gut into the blood, travel to the skin, and signal skin cells to make more collagen, elastin, and a moisture-trapping molecule called hyaluronic acid. This rebuilds the skin's inner structure, allowing the outer layer to hold more water.
What the research says
1 studyThis study found that women who took a specific collagen powder every day for six weeks had noticeably moister skin than those who took a fake pill, and the machine that measures skin moisture confirmed the difference.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.