Why you are losing your hair: DHT, the androgen receptor, and what actually stops it
Not stress, not your shampoo, not the hard water - in the overwhelming majority of men, one androgen acting on follicles that...
Folliva Labs
GHK-CU Copper Peptide Spray
- A copper tripeptide that conditions the scalp
- It is not an antiandrogen and does nothing to DHT
- Every batch tested by an independent lab before it ships
- A support layer — it will not hold a hairline on its own
Batch and date on every bottle
Discreet, tracked shipping
Formulated & tested in the EU
Support before you order
Documented, or we make it right
We formulate it, we blend it in the EU, and an independent laboratory tests every batch before it ships. Questions before you start? Write to us — we answer first, you buy second.
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What is GHK-Cu?
GHK-Cu is a copper tripeptide — a small copper-carrying peptide used mainly in skin and wound-healing research. We supply it as a labelled scalp spray, blended by us in the EU, with the batch number and blend date on every bottle. It is a support product, not a hair-loss drug.
How it works — and what it does not do
GHK-Cu works on the condition of the scalp itself: the skin your follicles sit in. It is not an antiandrogen. It does nothing to DHT, the enzyme that makes it, or the receptor it binds — so it does not address the cause of male-pattern hair loss at all. On its own it will not hold a receding hairline, and we won’t suggest otherwise.
What the evidence actually is
Be clear-eyed here. Most of the research on GHK-Cu is about skin and wound healing; the evidence in hair specifically is thin. It is included in the range as scalp support alongside a blocker, not as a treatment that regrows hair by itself.
How to use it
Six to seven pumps of the spray is about 1 ml. Apply to a dry, clean scalp over the areas you are treating, once a day, and let it dry.
Where it fits
GHK-Cu is a support layer. It pairs with a receptor blocker like RU-58841, pyrilutamide or CB-03-01 — the blocker addresses the cause, GHK-Cu looks after the scalp. Used alone, it is the mildest thing you can do.
Suitability & safety
For topical, research use. Copper peptides are generally well tolerated on skin; patch-test first and stop if you react. Speak to a professional if unsure.
Batch & storage
Every bottle is stamped with its batch number, blend date and expiry. Store it cool, dry and out of direct light.
A copper peptide that works on the condition of the scalp itself. Not an antiandrogen; it does nothing to DHT.
WHAT IT DOES
It works on the scalp — not on the hormone.
Most of this site is about blocking DHT, the hormone behind male-pattern hair loss. GHK-Cu does not do that. It is worth being precise about what a copper peptide is for, and what it is not.
- 01
A copper-carrying peptide
GHK-Cu is a small tripeptide bound to copper. In skin research it is associated with the condition and repair of the tissue it sits in. Here, that tissue is your scalp.
- 02
It conditions the skin your follicles grow from
A follicle grows out of scalp skin. GHK-Cu is used to support the quality of that skin — the environment around the follicle, rather than the follicle’s hormonal signal.
- 03
It does not touch DHT
This is the honest part. GHK-Cu is not an antiandrogen. It does nothing to DHT, the enzyme that makes it, or the receptor it binds. The cause of pattern hair loss runs on untouched. This is support, not a brake.
- 04
Which is why it is a layer, not the base
On its own, GHK-Cu will not hold a receding hairline. Its place is alongside a blocker that addresses the cause — looking after the scalp while the real work happens elsewhere.
Where the evidence stands
We would rather you knew this than found out later. The bulk of GHK-Cu research is in skin and wound healing; the hair-specific evidence is thin. We include it as scalp support, not as a regrowth treatment.
Who it is for
GHK-Cu makes most sense if your scalp condition is part of the picture and you are already running a blocker for the cause. If you are looking for the one thing to stop a receding hairline, this is not it — a receptor blocker is.
What we can be held to
We won’t dress GHK-Cu up as more than it is. What we can stand behind is the bottle: a copper peptide blended by us in the EU, lab-tested every batch, dated so you know how fresh it is.
THE ROUTINE
A spray, once a day.
GHK-Cu comes as a scalp spray pump. Simple to apply; best used as part of a routine rather than on its own.
-
01
Count the pumps
Six to seven pumps of the spray is roughly 1 ml. It is a spray pump, so you count it — there is nothing to measure.
-
02
Apply to a clean, dry scalp
Spray over the areas you are treating, onto the skin. A clean scalp takes it best.
-
03
Let it dry
Spread it gently and let it dry. Nothing to wash out.
-
04
Pair it, don’t rely on it
GHK-Cu is a support layer. Use it alongside a blocker, at the same time each day, and judge the routine as a whole.
For topical, research use. Batch number, blend date and expiry are printed on the bottle.
WHAT TO EXPECT
Set your expectations honestly.
GHK-Cu is scalp support, not a regrowth drug. What follows is what is reasonable to expect from a copper peptide — no more.
-
WEEKS 0–4
Getting into the routine
Take photographs of your scalp condition, not just your hairline. Early on there is nothing dramatic to see — that is normal for a support product.
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MONTHS 1–2
Scalp condition
Any change here is about the state of the skin — comfort, condition — rather than new hair. If regrowth is your goal, that job belongs to the blocker you pair this with.
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MONTHS 3+
As part of the whole
Judge GHK-Cu as one layer of a routine, not on its own. On its own, a copper peptide will not reverse a receding hairline.
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ONGOING
Its honest place in the plan
Keep GHK-Cu for scalp support and let a receptor blocker do the work on the cause. That division of labour is the whole point of the range.
MECHANISM COMPARISON
The options, side by side.
The common ways men treat male-pattern hair loss, compared on mechanism, side effects, evidence and cost.
| Feature | RU-58841Topical antiandrogen | CB-03-01Clascoterone, topical antiandrogen | PyrilutamideKX-826, topical antiandrogen | MinoxidilTopical growth stimulant | Oral finasterideSystemic DHT blocker | Ketoconazole shampooTopical antifungal | GHK-CuCopper peptide, scalp support | Natural topicalsCaffeine, rosemary, saw palmetto | Doing nothingBaseline |
|---|---|---|---|---|---|---|---|---|---|
| Mechanism | |||||||||
| What it acts on | The androgen receptor | The androgen receptor | The androgen receptor | Potassium channels, blood flow | 5-alpha-reductase. Lowers DHT | Fungus. Mildly, the receptor | The scalp skin itself. Not the hormone | Several weak effects. None well mapped | |
| Where it acts | Scalp | Scalp. Broken down there by design, but measurable amounts still reach the blood | Scalp, by design | Scalp. Some absorption | Whole body | Scalp | Scalp | Scalp | |
| Side effects | |||||||||
| No systemic or sexual side effects | PartlyDesigned to break down before it reaches the blood. No human data proves that it does. | PartlyBuilt to break down in the skin, but blood levels measured for their scalp solution are similar to the acne cream's, so a smaller treated area is not a safety argument. In the acne studies 3 of 42 had brief adrenal suppression that cleared after stopping. | PartlyBuilt to act locally. In the trials, safety was no different from placebo. The data is still thin. | YesNot a hormonal drug. Rare heart-rate effects at high doses. | NoLower libido and erectile problems in a minority of men. Most recover after stopping. Some report that they did not. | YesTopical, barely absorbed | YesA topical peptide. It does nothing to hormones, for better or worse. | YesNothing here reaches your bloodstream in any amount that matters | Yes |
| No scalp irritation | PartlyThe alcohol carrier can dry or sting. That is the vehicle, not the compound. | PartlyIn the hair trials local reactions matched the placebo liquid, but the placebo was the same carrier without the drug. The carrier is glycol-heavy and can dry the skin. | PartlyUsually mild, but it does not suit everyone | NoItching and flaking are common. Mostly the propylene glycol. | YesIt never touches your scalp | PartlyCan dry the scalp with regular use | YesGenerally well tolerated on skin. Patch-test anyway. | YesIn the rosemary trial, less itching than minoxidil. | Yes |
| What it does | |||||||||
| Blocks DHT | YesAt the receptor. A non-steroidal molecule. | YesAt the receptor. Same target, a steroidal molecule. | YesAt the receptor. Same target, non-steroidal like RU-58841. | NoIt grows hair by a different route entirely | YesLowers DHT at the source | PartlyA weak antiandrogen at best | NoNot an antiandrogen. It does nothing to DHT. | PartlySaw palmetto is a weak 5-alpha-reductase inhibitor | No |
| An antiandrogen you apply, not swallow | Yes | Yes | Yes | NoTopical, but not an antiandrogen | NoAn antiandrogen, but a tablet | PartlyTopical, weakly antiandrogenic | NoTopical, but not an antiandrogen at all | PartlyTopical. Weakly, and only through saw palmetto. | |
| Stimulates new growth on its own | NoIt takes the brake off. It adds nothing. | NoIt takes the brake off. It adds nothing of its own. | NoSame route. It removes suppression. | YesThis is the one thing it is for | NoSame idea: it removes suppression | No | NoIt looks after the scalp. It does not push growth. | PartlyA little, in small trials. Nothing like minoxidil. | |
| Also works on the scalp itself | No | No | No | No | No | YesClears the flaking and inflammation. The only antifungal here. | YesThis is the whole job of it: the condition of the skin your follicles grow from | PartlySome anti-inflammatory effect. It is not an antifungal. | |
| Evidence and approval | |||||||||
| An approved medicine for hair loss | NoA research compound. No approved human use, anywhere. | NoThe same molecule has been an approved 1% acne cream in the US since 2020, but nothing containing it is approved for hair loss anywhere. Another company is expected to file in 2027. | NoA research compound. No approved use, anywhere. The manufacturer is heading for a filing in China. | YesApproved for male-pattern hair loss | YesApproved, on prescription | PartlyApproved as an antifungal, not for hair loss | NoA peptide sold in cosmetics. No medicine containing it is approved anywhere. | NoCosmetics. Nobody has taken them through approval. | |
| Human evidence behind it | NoNo completed human trials. None. | YesTwo Phase 3 studies, 1,465 men, twelve months. Run by the company taking it through approval, on their formulation, not ours. | PartlyPhase 3 trial data at 0.5% and 1.0%, which puts it ahead of most topicals. The results are the manufacturer's and are not yet published. | YesDecades of randomised trials | YesDecades of randomised trials, and the longest evidence base of anything on this table | PartlyA handful of small studies | PartlyReal human data, but in skin and wound healing. What exists for hair is thin. | PartlyOne small trial matched rosemary oil to 2% minoxidil. Caffeine has a few. That is all of it. | |
| Available without a prescription | YesOnly because there is no approved use to prescribe | YesNo approved hair-loss version to prescribe. The acne cream made from the same molecule is prescription only. | YesSame reason again. There is no approved version to prescribe, anywhere. | YesOver the counter | NoPrescription only. A doctor has to agree. | Partly1% over the counter. 2% is usually a prescription. | YesNo approved medicine here to prescribe | YesAny shop, any time | |
| Living with it | |||||||||
| If you stop | Loss resumes | Loss resumes | Loss resumes | Shedding within weeks | Loss resumes | The flaking comes back | The scalp goes back to how it was | Back to baseline | |
| Daily effort | Once a day | Twice a day | Once a day | Once or twice a day | One tablet | Two or three times a week | Once a day | Daily, or every wash | None |
| Cost per month, roughly | €40–50 | €145 at 2.5%, €230 at 5% | €60–90 | €20–60 | €10–20 | €5–10 | €90 | €10–25 | €0 |
A comparison of mechanisms, not medical advice. Minoxidil and finasteride are approved medicines with decades of randomised trials behind them, and finasteride has the longest evidence base of anything here. RU-58841, CB-03-01 and pyrilutamide are research compounds: none of them is an approved hair-loss medicine today. The Phase 3 figures quoted for clascoterone come from the formulation another company is taking through approval, not from ours, and no cortisol data from those hair trials has been published. The pyrilutamide trial results come from the manufacturer and are not yet published. GHK-Cu is a copper peptide included here as scalp support, not as a regrowth treatment. The natural column covers topical caffeine, rosemary oil and saw palmetto, where the human data is real but thin. Prices are rough monthly estimates and vary by dose, bottle size and brand, and each assumes the routine on that product's own page. Speak to a doctor before you start or stop anything.
What else the lab makes.
RU58841 Topical Solution
4.9 (88)·5/8% · 30/50/100 ml
Occupies the androgen receptor so DHT cannot deliver its signal to the follicle.
This is the cause, not the symptom. On its own it will not push a dormant follicle back into growth.
From €39,99
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Pyrilutamide 0.5% (KX-826)
4.6 (16)·0.5% w/v · 30 mL
A newer topical androgen-receptor antagonist. Different molecule, same target as RU-58841.
For people who do not tolerate RU. Run one blocker or the other, not both.
€90,00
Waitlist
CB-03-01 2.5/5% (Clascoterone)
2.5/5% · 50 ml
Blocks the androgen receptor at the follicle, then breaks down in the skin into an inactive form.
The only one here that finished phase 3. Clascoterone sold much cheaper elsewhere is usually weaker than the label says.
From €89,00
Waitlist
Minoxidil 5%
4.6 (25)·5% · 60 mL
Extends the growth phase so follicles stay active longer. It does nothing to the hormone driving the loss.
Pairs with a blocker, never replaces one. Stop it and the growth it borrowed goes back.
€60,00
Waitlist
Ketoconazole Shampoo
An antifungal wash that handles the flaking and irritation sitting underneath a lot of shedding.
Two or three washes a week, alongside a blocker. It is not a blocker itself.
€29,99
Waitlist
GHK-CU Copper Peptide Spray
4.5 (13)·Copper peptide · 30 mL
A copper peptide that works on the condition of the scalp itself. Not an antiandrogen; it does nothing to DHT.
For scalp quality. On its own it will not hold a receding hairline.
€50,00
Waitlist
Natural Hair Regrowth Serum
4.6 (13)·Topical · 50 mL
Caffeine, rosemary and botanical oils. Scalp support, and the mildest thing in the range.
A leg of the routine, not the whole table. It does not block DHT.
€60,00
Waitlist
WHAT HAPPENS NEXT
We won’t oversell a copper peptide. Here is exactly what it is.
GHK-Cu is a copper tripeptide that supports the condition of your scalp. It is not an antiandrogen, it does nothing to DHT, and on its own it will not hold a receding hairline — the blocker in your routine does that. If scalp support is what you are after, this is it: blended by us in the EU and lab-tested every batch.
- Every batch is tested by an independent laboratory before it ships.
- Formulated and blended by us in the EU.
- Batch, blend date and expiry printed on every bottle. It degrades with time, so its age matters.
- Plain, unbranded packaging. Nothing on the outside says what is inside.
FAQ
Questions, answered.
What is GHK-Cu?
A copper tripeptide — a small copper-carrying peptide used mainly in skin and wound-healing research. We supply it as a scalp spray for supporting scalp condition.
Does it block DHT?
No. GHK-Cu is not an antiandrogen and does nothing to DHT, the enzyme that makes it, or the receptor it binds. It works on the condition of the scalp, not on the hormone behind pattern hair loss. It does not address the cause of hair loss on its own.
Will it regrow my hair?
Not by itself, and we won’t pretend it will. The hair-specific evidence for GHK-Cu is thin — most of the research is in skin and wound healing. Its job is scalp support alongside a receptor blocker that does the actual work on the cause.
How do I use it?
Six to seven pumps of the spray is about 1 ml. Apply to a clean, dry scalp once a day and let it dry. It is a spray pump, so you count it; there is nothing to measure.
What should I pair it with?
A receptor blocker — RU-58841, pyrilutamide or CB-03-01 — addresses the cause of the loss. GHK-Cu looks after the scalp while that happens. Used alone, it is the mildest thing in the range.
Are there side effects?
Copper peptides are generally well tolerated on skin. Patch-test first and stop if you react. It is a topical, so it does not carry the systemic effects of oral drugs.
How do I know it is genuine?
We blend it in the EU and an independent laboratory tests every batch before it ships. Every bottle carries its batch number, blend date and expiry.
Shipping and returns?
Shipped from the EU, usually 2–5 working days, in plain unbranded packaging. Unopened bottles can be returned within 14 days.
Science articles
Read before you start.
What the research actually says about hair loss, DHT, and the compounds people reach for.
