A peptide your skin already makes — just less of it with age
Visibly Firmer Skin. Six ingredients. Nothing Extra.
GHK-Cu is a copper peptide your skin naturally contains — and makes less of as you age. Studied for over 50 years, it's prized for the way it supports firmer, smoother-looking skin. We put it back into your routine at an active concentration, in a clean Hyaluronic Acid base. No fragrance, no silicones, no fillers.*
30-Day Money-Back Guarantee — try it risk-free.
Why copper peptides?
Your skin already knows GHK-Cu. It just makes less of it.
GHK-Cu is a tiny copper-bound peptide your own skin naturally contains — and your supply of it naturally tapers as you age. Your skin isn't broken. It just has less of the peptide it once had plenty of. The good news: you can put it back, topically, with an active-level formula.*
Your skin isn't broken
It just makes less of the peptide over time — the same way hydration and bounce naturally change with age.
50+ years of research
GHK-Cu is one of the most-studied peptides in skin science, researched for over half a century.
Put it back in
Asterwood gives you clinically-studied GHK-Cu at an active concentration — in a clean, 6-ingredient Hyaluronic Acid base. The blue-green color is the GHK-Cu being active.*
What it does for your skin
One molecule, dosed to perform
With consistent use, GHK-Cu supports skin that looks firmer, smoother, and more resilient over time. We pair it with 1.50% Hyaluronic Acid so every drop hydrates while it works.*
Firmer-Looking Skin
Helps visibly improve the appearance of firmness and elasticity with consistent use — skin that looks more resilient and bounced-back.*
Refined Texture
Supports a visibly smoother, more even skin surface and softens the look of fine lines over time.*
Plump, Quenched Skin
1.50% Hyaluronic Acid — a natural polysaccharide that draws and holds moisture — for immediate, lasting hydration and a supple, plumped finish.
What to expect, week by week
Consistency is the active ingredient. Here's the typical arc.
Skin feels hydrated, soft, and smooth.
Improved softness and a subtle, healthy radiance.
A more refined, even-looking skin surface.
Visibly improved firmness, elasticity, and softer-looking fine lines.*
Maximum visible benefits with continued daily use.
Individual results may vary.
Proven ingredients
Six ingredients. That's the whole list.
No fragrance, no silicones, no unnecessary additives. When the label is short, you can actually read it — and know exactly why every line is there.
GHK-CU 0.10%
Copper Tripeptide-1
The hero active. GHK is a tripeptide — three amino acids — that binds with copper to become GHK-Cu, the copper peptide your skin naturally contains. Studied for over 50 years and prized for supporting the look of firmer, smoother skin. Its natural blue-green hue is what gives the serum its color.*
Sodium Hyaluronate · 1.50%
Hyaluronic Acid
A natural polysaccharide that retains moisture in the body — it draws hydration into skin for a plumper, more supple appearance, and helps every active absorb better.
The Clean Base
Water · Pentylene Glycol · Phenylpropanol · Sodium Hydroxide
A minimalist carrier, a humectant, a gentle preservative, and a touch of pH balancer. No filler. Nothing that doesn't earn its place.
How to use
Two minutes, morning or night
Cleanse
Start with clean, dry skin so nothing competes with the active.
Apply 2–3 drops
Press and pat gently into face and neck until fully absorbed.
Lock it in
Follow with moisturizer. In the morning, finish with SPF.
Tips for use
- Use AM and/or PM, daily.
- Layers cleanly over Hyaluronic Acid and under moisturizer.
- Keep strong AHAs/BHAs and high-dose Vitamin C to a separate step.
- Patch test first on the neck, especially for sensitive or copper-sensitive skin. For external use only; avoid the eye area.
Why Choose Us
Comparison reflects ingredient counts and disclosures typical of multi-ingredient facial serums based on publicly available label data, as of May 2026. Individual products vary.
| Asterwood Copper Peptides | Typical multi-ingredient serum | |
|---|---|---|
| Ingredient count | 6 | 20–35+ |
| Added fragrance | None | Often |
| Silicones / fillers | None | Common |
| Hero active disclosed by % | GHK-Cu 0.10% · HA 1.50% | Rarely |
| Developed by chemists · third-party tested | Yes* | Varies |
What real reviewers say
The results speak for themselves
Great results, Stick with it!
I’ve been using this consistently for the past 3 months and it’s a game changer! Major reduction in fine lines and my skin looks great!
The most important daily for me.
I've been applying this every morning for almost 2-years now, the improvement is very noticeable after a few days.
Buy it!
Wow! This really hydrates the skin. A little goes a long way so it’s sure to last awhile. Will buy again!
Build your routine
It works even better in good company
Hyaluronic Acid
The brand's hydrating foundation. Lay it down first so copper peptides absorb on perfectly primed skin.
Copper Peptides Serum
Your firming treatment layer. The one you came for.
Hypochlorous Acid Facial Mist
A 3-ingredient mist to soothe and refresh — calming, comfortable prep for sensitive skin.
Before you buy
Questions, answered
GHK-Cu (Copper Tripeptide-1) is a small copper-bound peptide and one of the most extensively studied actives in dermatology. In skincare it's valued for supporting the look of firmer, smoother, more refined skin. Our serum uses it at 0.10%, paired with 1.50% Hyaluronic Acid.*
It does — GHK-Cu is a copper-bound peptide your body produces naturally, with the highest levels when you're young. Like hydration and bounce, your natural supply tends to taper with age. That's the thinking behind topping it back up topically with an active-level formula. The peptide has been studied for over 50 years.*
That color isn't a dye — it's the copper peptide itself. The natural blue-green hue is a built-in sign that the GHK-Cu in the bottle is present and active. We never add synthetic colorants.
Skin feels hydrated and smooth from day one. Most people notice improved softness within 1–2 weeks, a more refined surface around 3–4 weeks, and visibly improved firmness and softer-looking fine lines around 6–8 weeks of consistent daily use. Individual results may vary.*
Yes — it layers cleanly over Hyaluronic Acid and under moisturizer, morning or night. Keep strong exfoliating acids (AHA/BHA) and high-dose Vitamin C to a separate step or routine so nothing competes.
It's fragrance-free, silicone-free, and built on just six ingredients, which many people with sensitive skin appreciate. As with any new active, patch test on your neck first — especially if you have known copper sensitivity. For external use only; avoid the eye area.
No parabens, sulfates, phthalates, dyes, or synthetic fragrance. Vegan and never tested on animals. Developed by chemists, third-party tested, and made in the USA of domestic and globally sourced ingredients.*
Put the peptide back. Visibly firmer, smoother skin.
Visibly firmer skin. Visibly smoother texture. More resilient-looking over time, with consistent use. Simple. Clean. Effective.*
Free shipping · Clean, third-party-tested formula · Cancel a subscription anytime
Always free of parabens, sulfates, fragrances, and dyes. Never tested on animals.
*Describes the cosmetic appearance benefits of this product. This product is intended to improve the look of skin and does not alter its structure or function. Individual results may vary. Made in the USA of domestic and globally sourced ingredients. Statements have not been evaluated to diagnose, treat, cure, or prevent any disease. For external use only; avoid direct contact with eyes; discontinue use if irritation occurs.
