Peptide Skin ScienceIndependent · evidence-first
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Method

How we review research

Peptide marketing leans heavily on studies most people never read. Our job is to read them carefully and tell you what they actually support — including where they fall short.

Last updated July 5, 2026

The questions we ask of every study

  • What type of study is it? Lab-dish (in-vitro), animal, or human? Each supports very different conclusions.
  • How big and how long? Small, short studies are hypothesis-generating, not definitive.
  • Who ran or funded it? Manufacturer involvement doesn’t disqualify a study, but it’s context we disclose.
  • What was actually measured? The appearance of skin is a valid cosmetic endpoint; we don’t inflate it into medical proof.
  • Does the delivery match a real product? Injected or high-concentration lab conditions rarely reflect a serum on your face.

Our research-summary template

Every research review on this site follows the same structure, so nothing convenient gets left out:

  • Paper / body of work and study type
  • What was tested
  • Main findings
  • Limitations
  • What it does not prove
  • Practical relevance for skincare

How we phrase evidence

We deliberately avoid “science proves this works.” We use calibrated language: “a small study reported,” “evidence is promising but limited,” “better-studied than most cosmetic peptides” — statements that reflect the real strength of the data.

Our bias, stated openly

When in doubt, we under-claim. We would rather a reader be pleasantly surprised by a product than misled into expecting a result the evidence can’t support.