The Science

Every Zoe Clinique formula is built around one core ingredient: GHK-Cu, a copper peptide with decades of research behind it in cosmetic science.

What is GHK-Cu?

GHK-Cu is a naturally occurring copper peptide — a small fragment of protein bound to a copper ion, first identified in human plasma. It has since become one of the more thoroughly documented ingredients in cosmetic formulation, used at cosmetic concentrations to support skin's appearance from the outside in.

Why we build around it

We chose GHK-Cu because it's a well-studied, versatile ingredient that layers easily across an entire routine — rather than a single trendy add-on. It's why you'll find it in every one of our five core products:

• Cell Renewal Cleanser — a gentle daily cleanse
• Regenerative Mist — hydration and prep for the actives that follow
• Copper Peptide Renewal Serum — our core treatment step
• Exotides Youth Cream — daily moisture and barrier support
• GHK-Cu Dermal Infusion — our richest, most concentrated layer

Formulated responsibly

Every product is formulated at cosmetic-grade concentrations, intended to support the skin's appearance — not as a medical treatment. We believe in being straightforward about what skincare can and can't do: consistent, cumulative results over time, not overnight transformation.

Want to go deeper?

We write regularly about the science, routines, and research behind copper peptides on our Journal — start with What Is GHK-Cu Copper Peptide?