2% GHK-Cu Copper Peptide Serum
2% GHK-Cu Copper Peptide Serum
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90 days because GHK-Cu takes 12 weeks to work, full refund, keep the bottle, no questions.
What's Inside
What's Inside
1x GHK-Cu Peptide Serum — 30ml
- Your serum, sealed and ready. Dropper peptides in dissolving collagen suspended in a Silk Water base.
How-to card
- Application instructions so you get the most out of every drop.
Most copper peptide serums contain less than 10 parts per million of GHK-Cu. That's not a treatment. That's a label.
BioGlo is 2% — the concentration range used in the foundational 12-week clinical study. We had it independently verified by a third-party lab. The Certificate of Analysis is on this page. Check it yourself.
Use it every evening. A conflict guide ships with every order.
GHK-Cu signals your skin to produce more collagen and elastin — the proteins responsible for firmness and bounce. It fades dark spots, refines pores, calms redness, and repairs your skin barrier. Hyaluronic acid pulls moisture deep into the skin and holds it there.
Visible results in 4 weeks
Clinical studies show 86% of users see improved firmness within 28 days.
Formulated around the science
The foundational 12-week GHK-Cu facial study used a concentration in BioGlo's range. Most serums use a fraction of that dose.
Third-party tested
Every batch ships with a Certificate of Analysis confirming purity and potency.
All skin types
Lightweight, non-greasy, and dermatologist-tested for sensitive skin.
Active Ingredient
2% Copper Tripeptide-1 (GHK-Cu)
Full Ingredient List
Water (Aqua), Pentylene Glycol, Phenylpropanol, Sodium Hyaluronate (1.5%), Copper Tripeptide-1 (GHK-Cu) (2%), Sodium Hydroxide
Daily Routine (AM & PM)
Step 1 — Cleanse
Wash face with a gentle cleanser. Pat dry, leave skin slightly damp.
Step 2 — Tone (optional)
Apply toner first if it's part of your routine. Wait 30 seconds.
Step 3 — Apply the Serum
Wash face with a gentle cleanser. Pat dry, leave skin slightly damp.
Step 4 — Wait
Give it 60–90 seconds to absorb before layering anything on top.
Step 5 — Moisturize
Seal with your moisturizer. Copper peptides work best when locked in.
Step 6 — SPF (AM only)
Always finish with SPF 30+ in the morning. Copper peptides support repair, so protecting that work is essential.
Scenario-Specific Guidance
Anti-aging / firmness focus
Use AM and PM. Pat onto forehead, jawline, and under-eye area. Consistency over weeks is what drives collagen-remodeling results — expect visible change at 6–8 weeks.
Hydration / dry skin
Apply to damp skin to boost sodium hyaluronate absorption. Can layer a second drop on extra-dry areas. Follow immediately with a heavier moisturizer or facial oil.
Post-exfoliation (AHA/BHA nights)
Skip actives on the same night. Use this serum the night after exfoliating — copper peptides help repair the barrier faster.
Post-retinol nights
Don't mix copper peptides with retinol in the same step — they can counteract each other. Use retinol one night, this serum the next, or use this in AM and retinol in PM.
Redness / sensitivity flare
This serum is calming — glycerin and carbomer are soothing. Skip all actives and use this alone with moisturizer until skin settles.
Dull or uneven skin tone
Use nightly. The copper tripeptide supports cell turnover and skin renewal. Pair with Vitamin C in the morning for a brightening stack (apply Vit C first, this serum after).
What to Avoid
- Don't mix with Vitamin C in the same step — copper can oxidize ascorbic acid, reducing effectiveness of both
- Don't use with strong acids (glycolic, lactic) in the same application
- Don't over-apply — more drops won't speed results; 2–3 is sufficient
- Don't skip moisturizer after — serum alone won't seal in benefits
Certificate of Analysis — Verified Labs
Batch: GHK-TH5 · Assurance Date: 15 Jan 2026 · Heavy Metals: Non-detected
| Test Item | Result | Specification | Method | Status |
|---|---|---|---|---|
| Appearance | Blue powder | Blue powder | Visual | ✓ Conforms |
| Purity (HPLC) | 99.5% | ≥ 98.5% | HPLC | ✓ Pass |
| TFA Content | < 0.50% | < 0.50% | NMR | ✓ Conforms |
| Identification | Consistent w/ reference | Consistent w/ reference | MS/NMR | ✓ Pass |
Testing conducted by Verified Labs — Vector Institute, 108 College St W1140, Toronto, ON M5G 0C6 · 437-504-3810. All analyses performed using validated HPLC and NMR methods. Results specific to this batch and verified by their Quality Control Department.
Verified Review
I've been really happy with the improvement in my skin. I was dealing with redness, breakouts, and uneven texture, especially across my forehead and cheeks. After using this consistently, my skin looks much clearer and more balanced. The redness has significantly reduced, my complexion is smoother, and overall my skin just looks healthier. It's been a noticeable change for me, and I feel much more confident in my skin now.
Verified Review
Okay!! so I didn't think it would do much to be honest but my skin actually looks way better. like before it was dull and red and just tired looking. now it's smoother and more even and I don't feel like I need makeup as much. the redness calmed down a lot too. not perfect or anything but definitely a noticeable difference.