Peptide skincare, explained by the evidence.

This is an independent, evidence-led site about what peptides can and cannot do for skin. We start with the biology in Peptide Science and the everyday basics of barrier care, hydration and sun protection in Skincare Fundamentals. If you are new here, our guide to peptide ingredients and our look at whether peptides absorb into skin are sensible places to begin.

Beyond topical products, we cover in-clinic options in Aesthetic Treatments, the skin changes reported alongside weight-loss medication in GLP-1 & Skin, and the evidence for supplements in Collagen & Oral Peptides. Each hub gathers the relevant studies in one place and notes where findings conflict. Our Reviews & Comparisons apply the same standards to individual products and formulations.

Every article is written by our editorial team and follows a published research method. We cite primary studies rather than press releases, report effect sizes instead of headline percentages, disclose industry funding where a study has it, and label the strength of the evidence, so you can judge how much weight a peptide skincare claim deserves. Where the data are thin, we say so.