Editorial Policy & Fact-Checking Process

Every article on PDRN Guide is built on a foundation of peer-reviewed research. We don't rely on manufacturer claims or anecdotal evidence—we go straight to the scientific literature.

PDRN Guide is written by a research and editorial team. We are not clinicians, we do not perform treatments, and we do not give medical advice. We read the published literature on PDRN, compare it against what manufacturers and clinics claim, and report the gap.

We think that is worth saying plainly, because plenty of skincare sites imply clinical authority they do not have. We would rather tell you exactly what we are: researchers who read the papers carefully. For anything involving your own skin or an injection, see a qualified healthcare provider.

• We are a research and editorial team, not licensed clinicians
• Our articles are informational and are not medical advice, diagnosis, or a treatment plan
• PDRN has a limited human evidence base outside a few indications; we aim to say so where it applies
• Not every article carries formal citations. Articles that cite sources list them on the page

We cite only reputable, peer-reviewed sources. Here are the primary databases and journals we reference:

Where an article cites research, these are the rules we apply. Articles that carry citations list their sources on the page and are labelled as such; articles without citations are labelled a research summary, not a fact-check.

• Where we cite research, we prefer PubMed/MEDLINE-indexed peer-reviewed journals
• Clinical trials and systematic reviews are weighted above case series and manufacturer studies
• Conflicting findings are reported rather than filtered out
• Manufacturer and clinic claims are treated as marketing input, not as evidence

Update Policy: Core reference content is reviewed at least annually and whenever material new research is published.

Correction Policy: Substantive errors are corrected promptly; factual corrections are noted on the article with an update date.

PDRN Guide is editorially independent. No skincare brand, clinic, or manufacturer pays us to write, review, or recommend their product, and no third party has editorial approval or veto over our content.

Affiliate disclosure: PDRN Guide is a participant in the Amazon Associates program. Some articles — particularly product reviews and comparative guides — contain affiliate links. When you purchase through those links, we may earn a commission at no additional cost to you. Which products we cover, how we rate them, and the recommendations we make are determined by ingredient evidence, formulation quality, and clinical applicability — not by commission rate. Affiliate links are attributed with rel="sponsored".

We do not accept payment for editorial reviews, sponsored placements in core educational content, or undisclosed paid partnerships. If that ever changes, disclosures will appear both site-wide and on the specific article.