Free shipping worldwide · 60-day money-back guarantee
SUYARUN copper peptide serum, held by a woman with luminous skin
GHK-CU + SNAP-8 · Hyaluronic Acid · Panthenol

Copper, in its element.

★★★★★4.7 · 459 verified reviews
  • ✓Firmer, lifted skin
  • ✓Softer fine lines
  • ✓Deep, lasting hydration
  • 60-day money-back promise
  • Secure Shopify checkout
  • A real human replies, fast
  • Free tracked shipping, 6–12 days
The 60-day promise

Give it a real try. If your skin doesn't feel firmer, email us within 60 days for a full refund, even if the bottle's empty.

How the guarantee works →
SUYARUN GHK-Cu CreamGHK-Cu CreamSeals it in overnight · 60g · 60-day promise$39$24.99
Rather subscribe? Save 14% every month ↓
Live0+ shoppers · last 48h
What actually happens, week by week
Days 1–3Hydration & glow
Weeks 4–8Firmness & softer lines
OngoingCollagen support
✦ New here? First bottle $31.99
↓ See the before & after
01 / What to expect

Copper peptides, week by week.

Before
After
Drag to compareIndividual results may vary.
Days 1–3
Skin feels hydrated, calm and comfortable from first use
Weeks 4–8
The window where copper-peptide users typically notice firmer-looking skin
Ongoing
Twice daily to support tone and a smoother look over time

Cosmetic product. Supports the look of firmer, more even skin. Not intended to diagnose, treat, cure or prevent any condition. Results vary between individuals.

02 / The science

Your skin runs on copper.

GHK-Cu is a tripeptide, three amino acids carrying a copper ion, first isolated from human plasma in 1973. Your skin uses it as a repair signal. The problem: you make less of it every year.

Plasma GHK-Cu by age: the decline we re-supply
100%60%20%AGE 204060−60%
Adapted from published plasma-concentration data (Pickart, 1973 onward). Illustrative curve.
MECH 01

Re-signal collagen

GHK-Cu binds skin receptors that trigger collagen and elastin synthesis, the scaffolding that keeps skin firm.

MECH 02

Soften expression lines

SNAP-8 targets the look of expression lines, visibly smoothing the creases that repeated expressions leave around the forehead and eyes.

MECH 03

Hold the water

Multi-weight hyaluronic acid plumps immediately while panthenol keeps the barrier calm, so the actives stay comfortable.

03 / Reviews

4.7 stars from real buyers.

4.7
★★★★★
459 verified purchases
5★
360
4★
75
3★
12
2★
6
1★
6
Verified-purchase reviews
★★★★★Verified buyer✓ Verified · Feb 2026

“Absorbs easily, no greasy shine, and doesn’t clump under makeup. Afterwards my skin feels moisturised and firm.”

★★★★★B.✓ Verified · Apr 2026

“The skin is softer and more firm, I’ve already bought another jar.”

★★★★★Verified buyer✓ Verified · Jan 2026

“This goes a long way and feels great on my skin. A frown line between my eyes has definitely looked better lately.”

★★★★★M.✓ Verified · Nov 2025

“Extremely fast delivery, and genuinely quality GHK-Cu.”

★★★★☆Verified buyer✓ Verified · Jun 2026

“Using it on my face and elbows, and my skin’s responding really well and the texture’s lovely.”

★★★★★M***a✓ Verified · Jul 2026

“It’s a good nourishment for the skin and is not greasy. It’s great to use in summer or hot weather.”

SUYARUN serum bottles from a multi-month protocolSUYARUN serum bottle floating in deep waterMacro of the luminous blue SUYARUN serum textureDropper dispensing a drop of SUYARUN serum onto the back of a handSUYARUN bottle beside its navy retail box with copper foil logoSUYARUN bottle on a wet slate ledge in a spa setting
04 / The ritual

One serum. Eight weeks. Your collagen.

One dropperful, morning and night, on clean skin. One bottle is one month of the protocol, and firmness lands in weeks 4 to 8, so most people keep going past the first bottle.

60ml · 1-month protocol459 verified reviewsCancel subscription anytime
Fragrance-freeAll skin typesCruelty-freeShips in 1–2 days
Choose your protocol from $31.99
+ Complete the ritual

The serum treats. The cream seals it in.

Copper peptides work best sealed under moisture. Layer the serum, then lock it in with the GHK-Cu cream, a richer copper-peptide moisturiser that firms and hydrates overnight. All skin types, morning and night. Works with any protocol, or entirely on its own.

SUYARUN GHK-Cu serum and cream, the two-step ritual
Step 01 · Treat

The Serum

GHK-Cu 5% + SNAP-8. Signals collagen, softens lines. One dropperful on clean skin.

Step 02 · Seal

The Cream

GHK-Cu moisturiser. Locks the serum in, firms and hydrates while you sleep.

GHK-Cu Cream · $39 $24.99Save $14
No bundle required · Free shipping · Tracked, 6–12 days
+ The monthly ritual

Never run out. Subscribe and save 14%.

Copper peptides work with your skin over 4 to 8 weeks, so results compound when you don't skip. Get a fresh bottle every month at 14% off, and skip, pause or cancel in one click, anytime.

Best value · 14% off

The monthly ritual

$34.99$30.09/mo
  • One fresh bottle delivered every month
  • 14% off every order, for as long as you stay
  • Free shipping, tracked 6 to 12 days
  • Skip, pause or cancel in one click
Free shipping · Tracked, 6–12 days · 60-day money-back promise
05 / Ingredients

The actives, named.

No invented percentages, just the actives that are actually in it. The complete INCI is printed on every bottle.

Peptide
GHK-Cu
Copper tripeptide (Copper Tripeptide-1). Signals collagen & elastin, supports repair.
Peptide
SNAP-8
Acetyl Glutamyl Heptapeptide-3. Targets the look of expression lines.
Humectant
Hyaluronic Acid
Sodium hyaluronate. Draws in water for immediate, plumping hydration.
Provitamin
Panthenol B5
Barrier support that calms the look of redness and keeps skin comfortable.
Confirmed actives & INCI
Aqua (Water), Glycerin, Copper Tripeptide-1 (GHK-Cu), Acetyl Glutamyl Heptapeptide-3 (SNAP-8), Sodium Hyaluronate, Panthenol. The full ingredient list (INCI) is printed on every bottle. Always patch-test a new product first.
06 / Our story

Why copper. Why blue. Who we are.

CU29 started with a question: if GHK-Cu has been studied since 1973, why does every serum either hide it, dilute it, or dye itself blue to fake it?

So we built the serum we wanted to buy. Copper peptides at a real working level, named after the element itself, Cu, number 29, and blue only because the copper complex is blue. No dyes, no 12-step routine, no mystery percentages.

We're a small Australian team shipping worldwide. One serum, one cream, two pumps a day. That's the whole ritual.

07 / Questions

Asked before checkout.

Why is it blue? Is that dye?
No dye. When the GHK peptide binds a copper ion, the complex itself absorbs red light and reflects blue, the same reason copper minerals look blue-green. The colour is the active ingredient. If your serum is clear, ask what’s actually in it.
Can I use it with retinol or vitamin C?
Retinol: yes. Alternate nights, or retinol PM / CU29 AM. Direct-acid vitamin C (L-ascorbic): use at opposite ends of the day; copper peptides and strong acids compete. Derivative vitamin C forms layer fine.
When will I actually see something?
Hydration and glow: days. Firmness and softened lines: weeks 4–8, because collagen remodelling is slow biology, not marketing. Take a photo on day zero. It’s the only way to see a change this gradual.
Is it safe for sensitive skin, pregnancy, breastfeeding?
Fragrance-free, essential-oil-free, pH 5.5, formulated for all skin types including sensitive. For pregnancy or breastfeeding there’s limited research on topical peptides, and we’re a serum company, not your doctor. Please ask yours before starting.
Will the blue serum stain my skin or pillow?
No. The colour comes from the copper-peptide complex in solution, not a pigment or dye. It absorbs clear into skin in seconds and leaves no blue cast, no transfer to fabric. The blue is chemistry, not staining.
The Copper Serum
3-Month Protocol · 60-day money-back
$69.98