The Science Behind Skincare
Explore the research, biological mechanisms, and unanswered questions behind copper peptides and modern skincare ingredients.
What Is GHK-Cu? A Scientific Overview
What GHK-Cu is, what laboratory research has examined, and why lab findings are not proof of product results.
Read article →GHK-Cu and Collagen: What Does Research Show?
A look at the 1988 fibroblast study on collagen synthesis and the limits of applying it to skin.
Read article →Can GHK-Cu Penetrate Human Skin?
How researchers measured copper-tripeptide penetration in isolated human skin, and why results don't transfer between products.
Read article →GHK-Cu Safety: What Is Known and Unknown?
What laboratory research can and cannot say about the safety of specific GHK-Cu products.
Read article →OTC vs. Prescription GHK-Cu — Understanding the Differences
How OTC cosmetics and prescription-based care differ, and what the FDA says about compounded medications.
Read article →What Are Copper Peptides?
A plain-language explanation of copper peptides and the types of research behind them.
Read article →GHK-Cu vs. Retinol: How Does the Evidence Compare?
Why these two ingredients sit at very different levels of clinical evidence.
Read article →GHK-Cu vs. Vitamin C: What’s the Difference?
Two ingredients with different biological roles and different levels of evidence.
Read article →How Long Does GHK-Cu Take to Work?
Why published research cannot yet give a reliable results timeline.
Read article →GHK-Cu and Skin Aging: What Is Known?
Connecting what is known about skin aging to what GHK-Cu research has — and hasn’t — shown.
Read article →Can You Use GHK-Cu Every Day?
Why frequency of use should follow your product label and provider — not general claims.
Read article →GHK-Cu vs. Matrixyl: Comparing Two Skincare Peptides
What each peptide’s evidence includes and why neither has been shown to be superior.
Read article →GHK-Cu and Skin Elasticity: What Has Been Studied?
The link between the dermal matrix and elasticity, and what GHK-Cu research has measured.
Read article →Can You Combine GHK-Cu With Retinol?
What is — and isn’t — known about using both ingredients in one routine.
Read article →Does GHK-Cu Help With Acne Scars?
Why wound-healing research doesn’t establish GHK-Cu as an acne-scar treatment.
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