GHK-Cu 2% Serum · High-Concentration · Fragrance-Free
GHK-Cu Serum — a high-concentration 2% copper peptide.
Lines and loss of firmness become more visible over the years. Many serums don't include enough GHK-Cu to make a difference in how skin looks. The GHK-Cu 2% Serum delivers a high concentration, plus Argireline and Matrixyl. Daily. Full face. One step.
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20,000 ppm · high-concentration
- Kept stableTrehalose-stabilised, so the full 2% on the label reaches your skin.
- Protective packagingOpaque, UV-protective glass shields it from degrading light.
- Full INCI, no hidden blendsOrdered by concentration — full list below.
Overview
The lines between your brows, around your eyes, across your forehead look more visible over time. The GHK-Cu 2% Serum pairs a high concentration of GHK-Cu with Argireline to soften the look of expression lines and Matrixyl for firmer-looking skin. Used daily, skin looks visibly improved over the following weeks.
- Low-irritating
- 2% / 20,000ppm GHK-Cu
- Fragrance-free
- No silicones
- No artificial color
- pH 5.0–5.5
- Sustainable packaging
Net wt. 1.18 fl.oz. / 35ml
Key Benefits
-
2% GHK-Cu
and it shows — The deep blue color is what a high concentration of copper peptide actually looks like. Not a dye. The clearer a "copper peptide" serum looks, the less is usually in it.
-
Peptide that arrives intact
Trehalose is a bioprotectant that keeps GHK-Cu stable from formulation to your skin. Most brands skip this step. The label says 2%. This one delivers it.
-
Argireline + SNAP-8 = softer-looking expression lines
Together they help soften the look of crow's feet and forehead lines. Matrixyl supports firmer-looking skin. Ceramides support the barrier while the peptides work.
-
No fragrance. Not negotiable
A 2% active serum and synthetic fragrance don't belong together. This one doesn't have it.
How to Use
Always start on freshly cleansed skin — a gentle cleanser is all you need first.
One step. Every evening.
- Apply 3–4 drops to clean skin after cleansing.
- Press gently with fingertips — don't rub. Absorbs in about 60 seconds.
- Layer the GHK-Cu Capsule Cream or GHK-Cu Balm Stick on top.
- Use in the evening. On nights you use retinol or acids, skip this — alternate nights instead.
Building a routine? Layer it with the rest of the protocol for faster, compounding results — shop the full GHK-Cu range →
Pairing & SPF
Go easy on other actives. Avoid layering GHK-Cu in the same routine as retinol, retinaldehyde, vitamin C, or strong exfoliating acids — they can irritate skin, and vitamin C can deactivate the copper peptide. Use those on alternate nights so each active can do its job.
Always wear SPF. Daily sun protection is what lets a smoother, firmer look actually show. Finish every morning with a broad-spectrum SPF 30+ to protect your results.
How It Works
Most copper peptide serums don't have enough in them to make a visible difference. The GHK-Cu 2% Serum is a high concentration — and uses Trehalose to keep it stable from the moment it's made to the moment it reaches your skin. 2% stated means 2% delivered. That's not the standard in this category. It's the whole point.
GHK-Cu is a well-studied cosmetic peptide. Used consistently, it helps improve the look of firmness, texture, and tone over time — fine lines look softer, texture looks more even, and skin feels firmer. Results compound with consistent daily use over the following weeks and months.
Argireline and SNAP-8 help soften the look of expression lines — crow's feet, forehead creases. They work through different approaches, so their effects add up. Ceramides support your barrier while the actives do their work.
🔬 GHK-Cu is a well-studied cosmetic ingredient, with 50+ years of independent, peer-reviewed research behind it.
Ingredients — Full INCI
Aqua (Water), Glycyl-L-Histidyl-L-Lysine:Cu²⁺ Complex (GHK-Cu), Glycerin, Sodium Hyaluronate, Panthenol, Niacinamide, Allantoin, Carbomer, Sodium Hydroxide. pH 5.0–5.5. Free from: synthetic fragrance, parabens, silicones, PEGs.
Every ingredient disclosed — no proprietary blends. See our testing & transparency →
Formulated Without
- Microplastics
- Synthetic Fragrance
- Parabens
- Silicones
- PEGs
- Artificial Dyes
Shipping & Returns
- Free standard shipping on US orders over $80.
- Express delivery available at checkout.
- 30-day returns — unopened items.
- Email hello@koppabeauty.com to initiate a return.
Complete the set
The Missing Peptide
Losing firmness? Your skin stopped
making the peptide behind it.
GHK-Cu is the copper peptide your skin relies on to look firm and smooth. It peaks in your twenties, then drops year after year — and as it fades, skin loses firmness, fine lines settle in, and texture turns rough. Most creams just sit on top and mask it. Koppā puts GHK-Cu back where your skin lost it.
Don't cover the signs of aging — replace what's driving them. That's the copper peptide your skin loves.
GHK-Cu is a well-studied cosmetic ingredient — with 50+ years of independent research behind it, spanning the look of firmness, texture, and barrier support.
How it works
Liposomal GHK-Cu, built to absorb smoothly.
A high concentration only matters if the peptide stays stable and absorbs well. Here's the three-step journey ours takes.
Step 1
Sealed to survive
Each GHK-Cu molecule is wrapped in a lipid shell — so it stays stable instead of evaporating on the surface like most peptide serums.
Step 2
Absorbs smoothly
That shell helps it absorb evenly instead of sitting and drying on the surface like many peptide serums.
Step 3
Improves the look over time
GHK-Cu is a well-studied cosmetic peptide that helps improve the look of firmness, texture, and tone with continued use.
Why GHK-Cu?
New to copper peptides? Start here.
As skin ages, it makes fewer of the signals that keep it firm and smooth — so it repairs more slowly and lines settle in. GHK-Cu is a copper peptide your body already makes on its own. Applied to the skin at a real concentration, it helps prompt the look of firmer, healthier skin over time.
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.
Ours wins on every row. Now feel the difference on your own skin.
Add GHK-Cu 2% Serum to Bag — $64.00 → Free shipping over $80 · Skip or cancel anytimeDouble the concentration many serums call “premium.” Plenty of copper peptide serums market 1% GHK-Cu as a high, functional dose. The GHK-Cu 2% Serum is formulated at 2% — 20,000ppm — and we publish that number, backed by our supplier’s certificate of analysis. Most brands never disclose theirs at all.
Comparison reflects typical formulations in the prestige peptide-serum category. Ingredient positions are based on published INCI lists.
How it compares
Retinol, vitamin C, or copper peptide?
General guidance — actual results depend on formulation and concentration. GHK-Cu is gentle enough to pair with the others on alternate days; keep pure vitamin C in the morning and copper peptide at night.
Is it right for you?
Who it's for — and who it isn't.
Best for
- Fine lines and early wrinkles
- Loss of firmness
- Crepey, uneven texture
- Dull, tired-looking skin
- Sensitive skin that reacts to actives
- Preventative, everyday care
Not ideal if
- You want an exfoliant or a peel
- You want instant, temporary tightening
- You're specifically treating active acne
- You expect overnight results — this builds over weeks
The results
What changes — and when.
With consistent daily use, here's an illustrative timeline of what many people notice over time. Individual results vary.
Smoother & calmer
Skin feels softer and more hydrated; texture starts to even out.
Visibly refined
Tone looks more even, pores look smaller, skin looks fresher.
Firmer & bouncier
Fine lines look softened and skin feels firmer and more resilient.
Lasting change
Firmness and glow that build and hold with continued use.
Based on the typical GHK-Cu response window. Individual results vary with consistency and skin type.
Up close
GHK-Cu 2% Serum, in detail.
Reviews
What people say.
★ 96% recommend this product
441 reviews
The blue color threw me at first. Then I read why it's blue and I was sold. Three weeks in and the fine lines around my eyes are measurably softer.
I've used peptide serums from three different clinical brands. This is the first one where I actually saw a difference in the mirror and not just in my head.
Absorbs instantly, no sticky residue, and my skin just looks... better. I can't explain it more specifically than that — it just looks better.
I am 47 and have spent two decades trying to find something that actually works on the creases between my brows. Eight weeks of this serum. Measurably softer. My sister thought I had gotten Botox.
The blue color is jarring the first time. Then you realize it means the peptide is actually in there — that is the copper complex. After that you want it darker not lighter.
No featured reviews at this rating yet — showing a sample of verified reviews.
How to Use
One step. Every evening.
- Apply 3–4 drops to clean skin after cleansing.
- Press gently with fingertips — don't rub. Absorbs in about 60 seconds.
- Layer the GHK-Cu Capsule Cream or GHK-Cu Balm Stick on top.
- Use in the evening. On nights you use retinol or acids, skip this — alternate nights instead.
Before you ask
Frequently asked results.
When will I see results?
Hydration and surface texture often improve in 2–4 weeks; the look of firmness and softer lines builds over the following weeks with daily use.
Can I use it with retinol?
Yes — just alternate nights rather than layering both in the same session, so neither adds unnecessary irritation.
Can I use it with vitamin C?
Yes, with timing: keep pure vitamin C in the morning and GHK-Cu at night — vitamin C can deactivate copper peptides if layered together.
Can I use it twice daily?
Yes. GHK-Cu is gentle and designed for morning and night. In the morning, finish with SPF.
Is it safe for sensitive skin?
Generally yes — it's not an acid, retinoid, or exfoliant, and it supports the barrier rather than disrupting it. Patch test first if you're highly reactive.
Can I use it around the eyes?
Yes — apply gently to the orbital bone area, avoiding direct contact with the eyes themselves.
Questions
Everything you need to know.
Why is the serum blue?
Can I use the GHK-Cu 2% Serum with retinol, vitamin C, or acids?
Is 2% GHK-Cu actually worth paying more for?
What is GHK-Cu, in plain terms?
Is it safe for sensitive skin?
How does it compare to retinol?
How fast does shipping take?
How long until I see results?
Ready when you are.
Start your routine and let the peptide go to work — most people notice something within the first few weeks.
Complete Your Routine
Build the full protocol.
Koppā GHK-Cu Face + Body Peptide Balm Stick
Nine peptides in one precision balm. Target forehead, eyes, and lip lines.
Koppā GHK-Cu Capsule Cream
Biodegradable microbeads deliver GHK-Cu evenly across every contour of the face.
Koppā GHK-Cu Trio
Stick + Serum + Cream — the full GHK-Cu protocol in three steps. Save 15%.
Koppā GHK-Cu 2% Serum
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