Peptide Research

Cartoon illustration of skin layers with a hair follicle
Can Peptides Actually Penetrate the Scalp? What the Research Actually Says
Can peptides get through the scalp barrier? What the 500 Dalton rule, Argireline and copper-peptide penetration studies actually show. Read more...
Laboratory glassware with blue copper-peptide liquid and a glowing copper molecular network
Carrier Peptides: The Tiny Delivery Trucks That Make Copper Peptides Work
Carrier peptides like GHK and AHK-Cu bind copper and control how it moves and behaves. What the lab research actually shows — explained plainly. Read more...
What Are Signal Peptides? Meet Matrixyl
What Are Signal Peptides? Meet Matrixyl
Signal peptides like Matrixyl are the biggest peptide family in skincare. The plain-language science behind the messengers. Read more...
Why Are Copper Peptides Blue?
Why Are Copper Peptides Blue?
That vivid blue is not dye — it is copper. The chemistry behind the most striking color in beauty. Read more...
How to Layer Peptides in Your Skincare Routine
How to Layer Peptides in Your Skincare Routine
Peptides play well with others — with a couple of exceptions. A simple guide to layering peptides morning and night. Read more...
Peptides vs Retinol: A Gentler Path to Smoother-Looking Skin
Peptides vs Retinol: A Gentler Path to Smoother-Looking Skin
Retinol is powerful but irritating. Peptides offer a gentler route to smoother-looking skin — how they honestly compare. Read more...
Copper Peptides and the Scalp: What Lab Studies Show
Copper Peptides and the Scalp: What Lab Studies Show
What does lab research actually say about copper peptides and the scalp? An honest look at AHK-Cu studies. Read more...
AHK-Cu vs GHK-Cu: What's the Difference?
AHK-Cu vs GHK-Cu: What's the Difference?
AHK-Cu and GHK-Cu are cousins, not twins. Here's how the hair-focused copper peptide differs from the skincare legend. Read more...
GHK-Cu: The Most Studied Peptide in Skincare
GHK-Cu: The Most Studied Peptide in Skincare
GHK-Cu is the most researched cosmetic peptide in the world. Here's what decades of skin science say about the original copper peptide. Read more...