The molecule is proven.
The formulation is ours.
GHK-Cu has 50+ years of independent research behind it. Our job was to deliver it properly — high-strength, liposomal-encapsulated, in a clean base that keeps the copper active. Here's how we build it. The full research library lives here.
Your body already makes it.
It just stops making enough.
GHK-Cu (glycyl-L-histidyl-L-lysine copper) is a naturally occurring copper peptide found in your blood, saliva, and skin. It's a copper peptide naturally present in skin, studied for its role in the skin's appearance.
The problem is simple: your body produces less of it every year.
That 60% decline tracks directly with what most people call "aging skin" — slower healing, thinner dermis, less elasticity, more fine lines. GHK-Cu doesn't decline because you're aging. The research suggests you're showing signs of aging partly because GHK-Cu is declining.
KOPPĀ exists to put it back.
See how we formulate with GHK-Cu →The blue isn't dye.
It's the copper.
GHK-Cu turns blue when the peptide is bound to active copper. We liposomal-encapsulate every active so it stays stable and bioavailable in the bottle — that natural blue is the signal the copper is still intact and working.
Engineered to keep the actives active.
Most serums hide a small dose of peptide behind silicone and filler. Ours is built the opposite way — a clean vehicle that carries a high active load in cleanly, plus a barrier system that keeps skin comfortable.
Liposomal encapsulation
- Every active wrapped to stay stable and bioavailable
- Absorbs into the skin's surface
- Trehalose helps keep the copper-peptide chains sound
Clean hydro-gel vehicle
- Trehalose, Betaine & Glycerin hydration matrix
- No silicones, no heavy polymers
- No artificial optical micas or shimmer
Barrier-support system
- Ceramide NP & Ceramide EOP reinforce the lipid barrier
- Panthenol & Allantoin calm and soothe
- A safety net for a high 2% active load
Multi-peptide scaffold
- 2% GHK-Cu + Carnosine — copper peptide & anti-glycation
- SNAP-8 & Acetyl Hexapeptide-8 — for expression lines
- Palmitoyl peptides + SYN-AKE — firmness & smoothing
Where most peptide serums stop, ours starts.
A typical "peptide serum" leans on botanical filler and a low dose of copper peptide. Here are the same formula decisions, side by side.
Formulated at 2% GHK-Cu — 20,000 ppm. Many copper-peptide serums market 1% GHK-Cu as their high, functional tier. Koppā is formulated at 2% — double that. Published dose-response research shows visible effects across a roughly 0.03–3% range, placing 2% in the upper half of the studied window. And we disclose the number, verified on our supplier’s certificate of analysis — most brands never state theirs at all.
Comparison reflects typical formulations in the prestige peptide-serum category. Ingredient positions are based on published INCI lists.
Built on 50+ years of independent research.
Every formula decision traces back to published, independent studies on GHK-Cu — collagen, firmness, repair, and barrier science. We keep the full library on one page so you can read the sources yourself.
Explore the research library →The science tells us what it does.
We focused on how to deliver it.
GHK-Cu is active at remarkably low concentrations — studies show effects at doses as small as 0.01 nanomolar. The challenge isn't the molecule. It's getting it to your skin in a stable, effective format you'll actually use every day. That's what KOPPĀ is: the delivery system for a molecule that already has 50 years of evidence behind it.
The GHK-Cu Balm Stick
Targeted topical application. Copper peptide delivered directly where your skin needs it — fine lines, firmness, texture. Solid format means no mess, no dripping, no wasted product.
Shop the Balm StickThe GHK-Cu 2% Serum
Precision concentration for your face and neck. Lightweight, fast-absorbing, designed to layer into any existing routine or stand alone. Full-face GHK-Cu delivery.
Shop the SerumThe GHK-Cu Capsule Cream
Encapsulated GHK-Cu in a ceramide-rich cream. Absorbs over your serum as the final step and helps maintain the look and feel of the skin barrier.
Shop the Capsule CreamOne peptide, formulated to improve the look of aging skin.
In independent studies on the GHK-Cu molecule, the peptide was associated with collagen support in skin cells — one reason it's a well-studied ingredient in appearance-focused skincare.
See the research →Independent studies on the GHK-Cu molecule have explored its role in the look of firmer, smoother skin. In cosmetic use, GHK-Cu is valued for helping improve the look of firmness.
See the research →Independent studies on the GHK-Cu molecule have examined its role in the appearance of fine lines and wrinkles across the face, eyes, and neck.
See the research →GHK-Cu is a well-studied copper peptide prized in cosmetics for helping skin look smoother, fresher, and more even in tone and texture.
See the research →Paired with a supportive barrier system, our formulas are designed to leave skin feeling comfortable and looking calm and even.
See the research →GHK-Cu is a widely studied copper peptide used in cosmetics to help skin look protected against the visible effects of everyday environmental stress.
See the research →Your questions, answered by the research.
The research is published.
The rest is your call.
50 years of independent science. 4,000+ genes influenced. Collagen, firmness, repair, and protection — all from a peptide your body already recognizes. KOPPĀ just gives you more of it.