What is GHK-Cu?
A copper peptide your skin already makes, and levels drop as you age. It’s been used in professional skincare for years to support firmer, smoother-looking skin. Our serums contain 1% (Glo Skin Serum) or 3% (Ultra).
Glo Skin Serum Ultra
3% GHK-Cu + 3% SNAP-8
3x the peptides, for lines that won’t budge
- 3x the GHK-Cu and SNAP-8 of Glo Skin Serum
- Targets forehead, frown and smile lines
- For skin already used to active skincare
Free US shipping · 30-day money-back guarantee · Made in the USA
How soon will I see results?
Skin feels more hydrated from the first use. Consistency matters more than anything else.
Can I use it with Botox, retinol or vitamin C?
Yes, with one tip: use vitamin C in the morning and Cellora at night, or wait a few minutes between them. If you use retinol, alternate nights for the first two weeks.
Original or Ultra, which is right for me?
New to peptides or strong actives? Start with Glo Skin Serum. Once your skin is comfortable, usually after one bottle, step up to Ultra.
Cruelty Free
Hypoallergenic
Vegan
Gluten Free
Paraben Free
GMO Free
Fragrance Free
Dermatologist Tested
Free from sulfates, parabens, phthalates, synthetic fragrance, formaldehyde and dyes.
Don’t take our word for it. Real women, real results.
Illustrative images, not actual customer results.
Reviews
What customers say.
Your simple 4-step routine
1 Cleanse
2 Glo Skin Serum Ultra
3 Moisturise
4 SPF (AM)
Weekly Peptide mask
How to use Glo Skin Serum Ultra
How to use
The ritual.
01
Apply 5 to 6 drops to clean, dry skin, across the face, neck and décolletage.
02
Use twice daily, morning and night.
03
In the morning, follow with moisturizer and SPF.
Pro tip. If you are new to peptides, start with the Glo Skin Serum and step up to the Ultra once your skin is comfortable with it.
How to introduce Ultra
- Begin with the recommended application frequency
- Avoid immediately using it more frequently than directed
- Monitor how the skin responds
- Increase frequency only according to the product directions
- Reduce use if irritation or sensitivity develops
- Follow with moisturiser
- Use sunscreen during the day
How it works
The science, simply
What is SNAP-8?
A cosmetic peptide that helps soften the look of expression lines, the ones that show when you smile, squint or frown. It works on the surface of the skin, no needles involved.
Why is the serum blue?
Copper peptides are naturally blue. The colour is a sign the GHK-Cu is in there.
Illustrative, not to scale.
GHK-Cu
Copper tripeptide
Small enough to pass the skin barrier. Works deeper down, where it supports firmer, smoother-looking skin.
SNAP-8
Acetyl octapeptide-3
Larger, so it stays near the surface. Works where expression lines form, and softens their look.
3% GHK-Cu
A higher concentration of copper peptide for customers ready to move beyond the Original formula.
3% SNAP-8
A higher-strength peptide concentration designed to help soften the appearance of expression lines.
6% Total Dual-Peptide System
Ultra contains three times the concentration of each peptide found in Original, creating Cellora’s most intensive dual-peptide skin formula.
Choose Ultra When…
You have already used Original comfortably, understand how your skin responds to active ingredients and want a more intensive peptide routine.
Key actives
Cellora’s highest-strength peptide combination.
A 6% total dual-peptide system designed for experienced users who are ready to progress beyond the Original formula.
3% GHK-Cu
Intensive Copper Peptide Support
A higher concentration of the same copper peptide, chosen to support the appearance of visibly smoother, firmer and more resilient-looking skin.
3% SNAP-8
Advanced Expression-Line Support
A higher concentration of targeted cosmetic peptide designed to soften the appearance of expression-related lines and support a visibly smoother complexion.
6% Total Dual-Peptide System
Three Times the Concentration
Ultra contains three times the concentration of each peptide found in the Original, creating Cellora’s most intensive dual-peptide skin formula.
Cruelty-free · Hypoallergenic · Vegan · Gluten-free · Paraben-free · GMO-free · Fragrance-free.
Glo or Ultra? Choose your strength
New to peptides or strong actives? Start with Glo Skin Serum. Once your skin is comfortable, usually after one bottle, step up to Ultra.
Start here
Glo Skin Serum
1% GHK-Cu + 1% SNAP-8
Best for: Your first peptide serum
- Softens the look of fine lines and wrinkles
- Smoother, firmer-looking skin
- Deep hydration with hyaluronic acid
Strongest formula
Glo Skin Serum Ultra
3% GHK-Cu + 3% SNAP-8
Best for: Deeper lines, or your next step after Glo Skin Serum
- 3x the GHK-Cu and SNAP-8 of Glo Skin Serum
- Targets forehead, frown and smile lines
- For skin already used to active skincare
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Original or Ultra?
Ready to Move Up in Strength?
Ultra is the higher-strength option for customers already comfortable with peptide skincare. If you are new to Cellora, begin with Original.
Choose Original if
- You are new to GHK-Cu or SNAP-8
- You are beginning a peptide routine
- You want the lower starting concentration
- You are still learning how your skin responds to the formula
Choose Ultra if
- You have already used the Original comfortably
- You are experienced with peptide skincare
- You want three times the concentration of each peptide
- You are ready for Cellora’s most intensive formula
| Glo Skin Serum | Glo Skin Serum Ultra | |
|---|---|---|
| GHK-Cu | 1% | 3% |
| SNAP-8 | 1% | 3% |
| Total peptide concentration | 2% | 6% |
| Experience level | New or developing peptide users | Experienced peptide users |
| Best for | Daily hydration, smoothness and firmness | A more intensive peptide routine |
| Choose it when | Beginning with Cellora peptides | Original has already been used comfortably |
Full ingredients (INCI)
Water, Glycerin, Butylene Glycol, Lactobacillus / Soybean Fermentation Filtrate, Trehalose, Tripeptide-1 Copper, Panthenol, 1,3-Propanediol, Seawater, Phenoxyethanol, Dipropylene Glycol, Triethanolamine, Carbomer, Caprylyl Glycol, 1,2-Hexanediol, Ethylhexylglycerin, Hexanediol, Polyglycerol-10 Laurate, Acrylates / C10-30 Alkyl Acrylate Crosspolymer, PEG-40 Hydrogenated Castor Oil, Acetyl Hexapeptide-8, Phytosterols / Octyldodecyl Lauroyl Glutamate, Tocopheryl Acetate, p-Hydroxyacetophenone, Hydrolyzed Red Algae Extract, Sodium Hyaluronate, Squalane, Hydrolyzed Collagen, Lecithin, Sandalwood Oil, Palmitoyl Tripeptide-5, 1,2-Pentanediol, PPG-13-Decyltetradecyl Polyether-24, Palmitoyl Pentapeptide-4
Questions about Glo Skin Serum Ultra
Who it’s for
For experienced peptide-skincare users who want a higher-strength alternative to Glo Skin Serum Original.
- Have already used Glo Skin Serum Original comfortably
- Are experienced with peptide skincare
- Want to progress to a higher peptide concentration
- Are concerned about visible expression lines
- Want more intensive support for firmness and smoothness
- Understand how their skin responds to active ingredients
- Want Cellora’s highest-strength dual-peptide serum
How is the Ultra different from the Glo Skin Serum?
Concentration. The Glo Skin Serum carries 1% Blue Copper Peptide and 1% Snap-8 Peptide. The Ultra carries 3% of each. Same size bottle, same routine.
Which one should I start with?
If peptides are new to you, start with the Glo Skin Serum. Step up to the Ultra once your skin is comfortable with it.
What is Blue Copper Peptide?
It is the carton's name for GHK-Cu, listed in the ingredients as Tripeptide-1 Copper. The front of the Ultra box names it GHK-Cu directly.
How do I use it?
Apply 5 to 6 drops to clean, dry skin across the face, neck and décolletage, twice daily. In the morning, follow with moisturizer and SPF.
How should I store it?
Keep it away from excessive heat, direct sunlight and extreme temperatures, and out of reach of children. It is for external use only.
Is it made in the USA?
Yes. The Glo Skin Serum Ultra is made in the USA.
How much is it?
The Glo Skin Serum Ultra is $79.
Made in USA
3% Blue Copper Peptide (GHK-Cu)
3% SNAP-8 Peptide
Dermatologist tested & hypoallergenic
1.0 fl oz / 30 mL
Warnings. For external use only. Avoid direct contact with the eyes. Patch test before first use, and discontinue if irritation occurs. Keep out of reach of children.
Cosmetic product. Statements describe the look and feel of skin and hair and are not intended to diagnose, treat, cure, or prevent any disease.
Pairs well with
Weekly reset
Bio Peptide Recovery Mask
20 minutes to calmer, plumper-looking skin
- Copper peptide plus 6 types of hyaluronic acid
- Calms dry, tight or stressed-looking skin
- Cooling sheet mask, no rinsing
GHK-Cu + 6 hyaluronic acids
$24.99
Pre-event glow
Bio Collagen Hydrogel Mask
Brighter, bouncier-looking skin before you walk out the door
- PDRN, collagen and niacinamide in one mask
- Brightens dull, uneven-looking tone
- Cooling hydrogel that sits flush on skin, makeup-ready after
PDRN + collagen + niacinamide
$27.99
Start here
Glo Skin Serum
Softer-looking lines and firmer skin, without a needle
- Softens the look of fine lines and wrinkles
- Smoother, firmer-looking skin
- Deep hydration with hyaluronic acid
1% GHK-Cu + 1% SNAP-8
$68
