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DERMA-CODE™ Science

DERMA-CODE™ Science is an evidence-based research library covering the biology behind NAD⁺, PDRN, and peptides in skincare. Each article draws on peer-reviewed literature to explain how these molecules work, what the research actually shows, and how to evaluate clinical claims honestly. No hype. No borrowed data. Just the science.

What Does Clinically Proven Mean in Skincare?
DERMA-CODE™ Science — Clinical Methodology "Clinically Proven" Doesn't Mean What Most People Think It Means There is a phrase on almost every skincare product that sounds definitive and means far less than most people assume. Clinically proven. It appears on serums that cost fifteen dollars and serums that cost three hundred. It appears on products tested on eight people for two weeks and products that went through a year of independent evaluation. It appears on finished formulas and on ingredients that were tested in isolation years before your product existed.... Read more...
What Does a Cosmetic Clinical Study Actually Involve?
Most brands describe their products as clinically evaluated. Very few explain what that actually involved. This article walks through the full process REB approval, instrumented measurement, blinded dermatologist grading, and predefined endpoints. Read more...
Do NAD⁺ PDRN and Peptides Work Better Together in Skincare?
NAD⁺, PDRN, and peptides each have documented roles in skin biology. The more interesting question is whether they work better together and what the research on non-overlapping mechanisms actually shows about combination formulas. Read more...
Does More Peptides in Skincare Mean Better Results?
Products advertising fifty peptides imply that more means better. The available research does not support that logic. Peptide selection, mechanism, and concentration appear to matter far more than how many appear on an ingredient list. Read more...
Does PDRN Molecular Weight Matter for Skincare?
Not all PDRN is the same. Molecular weight determines how PDRN behaves both inside a formula and on the skin and the 500 Dalton rule is the most important context most topical PDRN marketing never addresses. Read more...
NAD⁺ vs Niacinamide: What Is the Difference in Skincare?
Niacinamide and NAD⁺ are parts of the same biochemical system but they operate at very different levels. Understanding the relationship between them changes how you evaluate both ingredients and the formulas that contain them.   Read more...
What Is the Difference Between Polynucleotides and PDRN?
Polynucleotides and PDRN are not the same thing and most skincare marketing blurs the difference. Here is what the peer-reviewed aesthetic medicine research actually found, and where the evidence is strong versus still developing. Read more...
PDRN vs Retinol: Which Is Better for Skin?
Retinol and PDRN both support skin renewal but through completely different mechanisms. One works by triggering a stress response the skin adapts to. The other works by supporting repair pathways the skin is already running. Read more...