About Peptide Skincare
Who we are
Peptide Skincare is an independent editorial site about peptides and skin. We cover topical peptides, skin fundamentals, aesthetic treatments, GLP-1 medications and their effects on skin, collagen and other oral peptides, and product reviews. The Peptide Skincare Editorial Team writes and edits all content. We aim to explain what the research actually shows, including where it is thin or missing.
Our research method
Every article starts with the primary literature, not press releases or brand claims. Our process:
- Primary sources first. We search PubMed and similar databases and read the original studies. Reviews help us find studies, but we check the claims against the studies themselves.
- Duplicate publications count once. The same trial data sometimes appears in several papers, posters, or trade articles. We count it as one piece of evidence.
- Lab results are not human results. We state clearly whether a finding comes from cell cultures, animal models, skin explants, or controlled human trials. A peptide that boosts collagen in a petri dish has not been shown to do so in your skin.
- Effect sizes, not marketing percentages. "Up to 45% wrinkle reduction" usually means a best-case result in a small group. Where we can, we report average changes, sample sizes, study length, and whether there was a control or placebo group.
- Ingredient names are checked. We confirm INCI names against the EU CosIng database, so you can match what we discuss to what is on a product label.
- Funding is disclosed. Many peptide studies are funded or run by ingredient manufacturers. When a study has industry funding or author conflicts, we say so.
Evidence labels
Our articles use the following labels to summarise the strength of evidence behind a claim.
| Label | What it means |
|---|---|
| Well-established | Consistent results from multiple independent, well-designed human trials, or systematic reviews of them. |
| Moderate | Supported by at least one good-quality controlled human trial, with some independent confirmation, but with remaining gaps in size, duration, or consistency. |
| Limited | Small, short, uncontrolled, or single human studies. A real signal is possible but not confirmed. |
| Early/Preliminary | Based mainly on in-vitro, animal, or ex-vivo research. No reliable human data yet. |
| Manufacturer data only | The only available evidence comes from the company selling the ingredient or product, usually unpublished or not peer-reviewed. |
Corrections & updates
Research changes, and we make mistakes. When we find an error, or a reader points one out, we correct it promptly and note the correction at the end of the article. When new studies change a conclusion, we update the article and show the date of the revision. We do not quietly rewrite substantive claims.
Independence & advertising
Our editorial decisions are our own. Brands cannot pay for coverage, positive reviews, or changes to evidence labels. The site may carry advertising or affiliate links. Where an article contains affiliate links, it is disclosed, and those links do not affect what we write or which products we recommend.
We occasionally publish guest contributions. They must meet the same citation and evidence standard as our own articles, go through the same editing, and are clearly labeled as guest content.
Medical disclaimer
Our content is for general information and education only. It is not medical advice and does not replace consultation with a qualified healthcare professional, particularly for prescription medications such as GLP-1 drugs or for aesthetic procedures. Please read our full disclaimer.
Contact
For corrections, questions, or editorial enquiries, email editor@peptideskincare.co. We read every message, though we cannot give individual medical advice.