Copper Peptides for Skin After 45: What They Do and What the Evidence Shows
Quick summary
Copper peptides (GHK-Cu) are a small peptide your body makes naturally, bound to copper. Levels in the blood fall with age. In skincare, they are used to support the look of firmer, smoother, calmer skin.
Lab research is promising, but the human studies on faces are small, short and often linked to industry. Retinoids still have much stronger evidence for fine lines. Copper peptides may suit women after 45 whose skin cannot handle retinol.
At Genova Skincare we make a peptide serum, so we have a view, and we have tried to keep it honest here. Results vary from person to person.
What are copper peptides, and why are women over 45 hearing about them?
At Genova Skincare, we have seen copper peptides everywhere this year, and Australian searches for them have more than doubled. So what are they?
GHK is a tiny peptide made of three amino acids. It was first identified in human blood plasma in 1973, in the research of Dr Loren Pickart. In the body, it binds tightly to copper, which is why skincare labels call it GHK-Cu or copper tripeptide-1.
A 2018 review by Pickart and Margolina in the International Journal of Molecular Sciences reports blood levels of about 200 ng/mL at age 20, falling to about 80 ng/mL by age 60. That decline is part of why copper peptides are marketed for mature skin.
The trend has two sides, though. The same peptide is being sold online as injectable "research" products. In April 2026 the TGA warned Australians about unapproved peptides, including GHK-Cu, after reports of severe allergic reactions. A cosmetic serum on your skin is a very different thing from an injection. Never inject products sold as "not for human use."
What do copper peptides do for mature and menopausal skin?
Copper peptides are called "carrier" peptides because they help deliver copper, which skin enzymes use to build collagen and elastin. In lab and animal studies, GHK-Cu has been linked with:
- Support for collagen and elastin production
- Calming inflammation and redness
- Antioxidant activity
- Wound repair
Those are the reasons the ingredient gets excited press. A 2026 article in The Conversation by Elbediwy and Wehida, two university lecturers, argued copper peptides "do the work of multiple peptides in one." They also noted irritation and mild allergic reactions in some people.
After menopause, collagen falls quickly, and skin becomes thinner, drier and more reactive. An ingredient that supports repair without much sting is naturally appealing. The key question is how well that lab promise carries over to real faces.
Do copper peptides work on mature skin? What the evidence says
Here is the honest picture. Most of the human studies on copper peptide creams are small and 8–12 weeks long. Several are described in Pickart's own reviews and appear to be conference presentations rather than full published trials. That does not mean they are wrong, but it does mean they are weak evidence.
One small study that was published, by Abdulghani and colleagues in 1998, gave 20 volunteers a month of creams on normal skin. More people using the copper peptide cream showed extra collagen in skin samples than those using vitamin C or tretinoin creams. It was tiny and short, did not look at facial ageing, and measured collagen rather than wrinkles.
A 2017 review of cosmetic peptides by Schagen in Cosmetics warns that many peptide studies have very few participants or rely on a single study. When a product contains several actives, results "cannot be claimed clearly" to come from the peptide.
We could find no large, independent, randomised trial of copper peptides for facial ageing. By contrast, a 2024 systematic review in the American Journal of Clinical Dermatology calls tretinoin "the gold standard" for sun-related ageing, while noting its poor tolerability.
Copper peptides vs other peptides vs retinol after 45
Cosmetic peptides fall into a few families. This table shows where copper peptides sit.
| Ingredient | Type | What it is designed to do | Evidence on faces | Irritation |
|---|---|---|---|---|
| Copper peptides (GHK-Cu) | Carrier peptide | Deliver copper, support repair and collagen | Promising, small studies | Low, some reactions |
| Palmitoyl pentapeptide-4 (Matrixyl) | Signal peptide | Signal skin to make collagen | Small trials, modest | Low |
| Argireline, SNAP-8 | Neurotransmitter-inhibiting peptide | Soften the look of expression lines | Small studies, mild effects | Low |
| Retinol | Retinoid (vitamin A) | Speed cell turnover, support collagen | Good | Moderate |
| Tretinoin | Prescription retinoid | As retinol, much stronger | Strongest | High |
So is copper better than retinol? There is no good evidence that it is. Retinoids remain the best-studied option. Copper peptides make most sense when retinol stings, flakes or flares your skin, which is common after menopause. Our guide to peptides vs retinol for menopausal skin covers how to choose, and our overview of whether anti-ageing peptides work explains each peptide family.
How to choose a copper peptide serum in Australia after 45
Copper peptide products vary a lot, so a quick label check helps before you spend money.
- Look for the name. On an ingredient list it usually appears as "copper tripeptide-1." "Copper PCA" or "copper gluconate" are different copper ingredients, not GHK-Cu.
- Expect a blue tint. Serums with a real amount of copper peptide are often pale blue. The Ordinary confirms its serum should look blue.
- Check where it sits in the list. Ingredients above 1% are listed from most to least. A copper peptide named near the end, after the fragrance, is likely there in a small amount.
- Be wary of big promises. Words like "reverses ageing" or "rebuilds collagen" go well beyond the evidence.
- Buy from a known Australian retailer. Cheap overseas listings can be hard to trace, and powders or vials sold for "research" are not skincare.
If your skin is already reactive, introduce one new product at a time. That way, if something stings, you know which one to stop.
Where Genova Anti-Wrinkle Serum fits after 45
We should be clear: Genova Anti-Wrinkle Serum is not a copper peptide serum. It is a 50ml peptide serum with three active peptide ingredients, designed for fine lines in mature skin. It is made in Australia and costs $69.95.
If you are curious about copper peptides but want a simple routine, you do not need both. Choose one peptide serum, use it consistently, and give it time. If you want to try copper peptides, The Ordinary's Multi-Peptide + Copper Peptides 1% Serum was $54.10 for 30ml in September 2026. Prices for other copper serums in Australia ranged from about $42 to over $140.
50ml, made in Australia. Three active peptide ingredients for fine lines. 30 day money back trial.
Pros and cons of copper peptides
Pros:
- Usually gentle, suits skin that reacts to retinol
- Promising lab research on repair and calming
- Widely available in Australia at a range of prices
Cons:
- Human evidence on faces is small and often industry linked
- Can clash with vitamin C, strong acids and retinoids in the same step
- Some people get irritation or a mild allergic reaction
- Will not change deep wrinkles, sagging or volume loss
Who copper peptides are for, and who they are not for
They may suit you if your skin is sensitive or dry after menopause, retinol has not agreed with you, or you want a gentle step to support your barrier.
They are not for you if you want the best-studied option for fine lines (ask your GP about retinoids), you already use several actives and your skin is irritated, or you are tempted by injectable peptides sold online.
How to add copper peptides to your routine after 45
- Patch test first. Apply a little behind the ear or on the inner arm for a few days.
- Apply to clean, unbroken skin. A few drops is enough for the face and neck.
- Keep it away from vitamin C and acids. The Ordinary advises against using its copper serum with direct vitamin C, direct acids or retinoids. Use them at different times of day.
- Follow with moisturiser. Drier skin after 45 needs the extra cushion.
- Wear SPF 50+ every morning. No peptide can make up for daily sun damage.
- Give it 8–12 weeks. Then judge by texture, comfort and how your skin behaves, not by one photo.
Realistic expectations
Skin may feel calmer and smoother within 4–6 weeks. Any change to the look of fine lines builds slowly over 8–12 weeks or longer.
Copper peptides will not lift sagging skin, fill deep lines or replace a prescription retinoid. Results vary from person to person.
Copper peptide questions women over 45 ask
What does a copper peptide do?
It helps deliver copper to skin cells. Lab and small human studies suggest it may support collagen, calm inflammation and act as an antioxidant.
What are the downsides of copper peptides?
Some people get irritation or a mild allergic reaction. They can be unstable with vitamin C, strong acids and retinoids, and the human evidence is limited.
Is copper peptide better than retinol?
No good evidence says it is. Retinoids are better studied for fine lines. Copper peptides may suit you if retinol irritates your skin.
Can you use copper peptides with vitamin C?
Not in the same step. Many people use vitamin C in the morning and copper peptides at night, or alternate days.
Are copper peptide injections safe?
Injectable GHK-Cu is not approved in Australia. The TGA warned about unapproved peptides in April 2026 after reports of serious reactions.
Do copper peptides help menopausal skin?
They may help skin look calmer and smoother, and they are usually gentle. They cannot replace lost oestrogen or the collagen that goes with it.
Copper peptides are a reasonable, gentle option, not a breakthrough. If your skin has struggled with retinol, they are worth a try. Whatever you choose, keep it simple, be patient, and wear sunscreen daily.
Individual results vary. This article is general information, not medical advice. Genova Anti-Wrinkle Serum is a cosmetic designed to help the appearance of fine lines; it does not contain copper peptides and is not a substitute for advice from your GP or dermatologist. Other brands named are not affiliated with Genova Skincare. Prices were checked on 25 September 2026 and change often.
Sources:
- Pickart L, Margolina A. Regenerative and protective actions of the GHK-Cu peptide in the light of the new gene data. International Journal of Molecular Sciences. 2018;19(7):1987.
- Pickart L, Vasquez-Soltero JM, et al. GHK peptide as a natural modulator of multiple cellular pathways in skin regeneration. BioMed Research International. 2015;2015:648108.
- Abdulghani AA, Sherr A, Shirin S, et al. Effects of topical creams containing vitamin C, a copper-binding peptide cream and melatonin compared with tretinoin on the ultrastructure of normal skin. Disease Management and Clinical Outcomes. 1998;1(4):136-141.
- Schagen SK. Topical peptide treatments with effective anti-aging results. Cosmetics. 2017;4(2):16.
- Siddiqui Z, et al. Comparing tretinoin to other topical therapies in the treatment of skin photoaging: a systematic review. American Journal of Clinical Dermatology. 2024;25(6):873-890.
- Elbediwy A, Wehida N. Copper peptides: these powerful molecules are worth the skincare hype. The Conversation. 2026.
- Therapeutic Goods Administration warning on unapproved peptide products, April 2026, as reported by RACGP newsGP.
- The Ordinary, Multi-Peptide + Copper Peptides 1% Serum, Australian product page: directions and conflicts, checked 25 September 2026.
