GHK-Cu Copper Peptide Hair & Scalp Serum
$60
NMN + Resveratrol Capsules
$70
GHK-Cu Copper Peptide Face & Neck Serum
$51
Liposomal Vitamin C
$52
AHK-CU + GHK-CU Hair Serum Pro
$185
NMN Powder
$45
GHK-Cu Copper Peptide Hair & Scalp Serum is a high-strength leave-on scalp formula built around GHK-Cu, known in cosmetics as Copper Tripeptide-1.
Each 60 mL (2 oz) bottle is formulated to a labeled strength of 2,400 mg GHK-Cu at 4% in a simple distilled-water base.
The formula is designed for direct scalp application rather than coating the lengths of your hair. Its water-light texture absorbs without the greasy feel of many scalp oils, and the blue color comes from the copper peptide itself.
GHK-Cu is the copper-bound form of the tripeptide Gly-His-Lys. In cosmetic terminology it is commonly associated with Copper Tripeptide-1.
The broader research literature has investigated GHK-Cu in relation to extracellular-matrix biology, tissue signaling and skin biology. Hair-specific research is newer and much less extensive.
Defined strength. Each 60 mL bottle is formulated to contain 2,400 mg of GHK-Cu at 4%.
Simple vehicle. The formula uses distilled water as the base instead of oils, fragrance or a long list of supporting actives.
Recent lot testing. A recent Qalitex-tested lot (DK25-CPH1-9) measured 2,533 mg GHK-Cu by HPLC against a specification of 2,400 mg per bottle. That result applies to the tested lot; the labeled strength stays 2,400 mg.
GHK-Cu is a copper-binding tripeptide studied across skin, tissue and emerging hair-related research. Hair-specific human evidence is still limited.
A small randomized 2026 study tested a different 2% topical GHK-Cu serum on the eyebrows of 18 adults for 12 weeks and reported improvements in eyebrow hair count and diameter. That is useful human evidence, but it did not test scalp hair or this 4% formula.
A separate human study evaluated GHK together with 5-aminolevulinic acid in men who have pattern hair loss. Because that was a combination treatment, the findings cannot be attributed to GHK alone or transferred directly to this finished serum. PubMed
Another frequently cited copper-peptide hair study tested AHK-Cu, not GHK-Cu. It found hair-follicle elongation ex vivo and dermal papilla effects in vitro, but AHK-Cu is a different peptide and that study was not a human clinical trial of this product. PubMed
Ingredient research can explain why GHK-Cu is of interest, but it does not prove that this finished serum will produce a specific amount of hair growth. This serum is made to support the appearance of fuller, healthier-looking hair and a conditioned scalp. It is a cosmetic, not a treatment for androgenetic alopecia or another medical cause of hair loss.
Verified customers shared these photos of their progress with this serum, each pair starting at week 0. Hair changes are gradual and vary between people, and these photos were taken under real-world conditions.
Individual results vary. Customer photos and reviews are personal experiences, not a clinical study of this finished serum.
Sisse Marie, one of the family founders of Neurogan Health, walks through what the serum is, what is in it, how to apply it and why daily use matters.
In this video
Individual results vary. This is a cosmetic product, not a hair-loss treatment.
Copper Tripeptide-1
A short guide to the one active in the bottle.
GHK-Cu is the copper-bound form of the tripeptide Gly-His-Lys: glycine, histidine and lysine holding a copper ion. The copper is why the serum is blue.
GHK-Cu occurs naturally in the body. Research has looked at its role in extracellular-matrix biology, tissue signaling and skin, and it is also the active in our face creams.
Hair research is newer. A small 2026 study found a 2% GHK-Cu serum may support the look of eyebrow hair over 12 weeks.
A concentrated copper peptide serum in a distilled-water base, exactly as printed on the bottle.
COPPER PEPTIDE ACTIVE
Copper Tripeptide-1
The primary active, at a labeled 2,400 mg per bottle. It is also the source of the serum's characteristic blue color.
As printed on the bottle.
The formula has no added fragrance, oils, sulfates, parabens or filler actives.
The blue comes from GHK-Cu itself, not from an added dye.
What you will notice first, when your hair starts to look different, and when you will need a second bottle.
Day 1
With only GHK-Cu and distilled water inside, the mist is as thin as water and dries without an oily film, so your hair does not look greasy afterwards. Take a daylight photo of your part or crown today, before the first spray.
“I appreciate it not leaving any residue.” Heather M.
Weeks 1 to 4
The first change customers describe is on the scalp, which feels less dry and more comfortable after a few weeks of daily use. One application a day is the whole routine, so it is easy to keep up.
“After just 30 days of using it once a day, my hair and scalp already look and feel healthier.” Anthony M.
Weeks 5 to 8
In the second month customers start describing hair that looks and feels fuller where they spray, most often at the part and temples. Put a new photo next to your Day 1 shot, because side by side shows what the mirror misses.
“It makes my hair feel fuller.” Lori D.
Weeks 9 to 12
At once a day, your first bottle runs out around week 8, so by now you are on your second. Several customers say the difference became clear around the three-month mark, so take your week-12 photo in the same light and compare it with Day 1.
“A product that actually begins to show results at 3 month mark.” Sean W.
Quotes are from verified customer reviews and describe individual experiences, not a clinical study. Results vary. This is a cosmetic product, not a hair-loss treatment.
Use it once a day, morning or evening. Consistency matters more than the time of day.
01 · Clean, dry scalpPart your hair so the serum reaches the scalp rather than the lengths. Apply a few sprays to the areas where hair looks thinner or less full. If your hair is fine or gets oily quickly, start with fewer sprays.
02 · 30 to 60 secondsUse your fingertips to spread the serum across the area for 30 to 60 seconds, so it stays on the scalp instead of running down. Gentle pressure is enough.
03 · Every dayIt is a leave-on serum, so there is no need to rinse. Let it absorb before you apply styling products, then repeat the next day.
The serum is deeply colored and can leave a temporary blue mark on the scalp or on very light, white or silver hair. Spray at the scalp rather than along the lengths, let it absorb fully before contact with light fabrics, and any tint washes out with your next shampoo.
Let it absorb before you add styling products. If you use minoxidil, exfoliating acids, retinoids or a medicated scalp product, introduce one new product at a time so it is easier to tell what your scalp tolerates.
Patch test first if your scalp is sensitive. Apply to intact scalp only, avoid the eyes, and stop if burning, swelling, a rash or irritation persists.
A lab report and a research paper answer different questions, so we keep them separate. See the Neurogan evidence map.
Two kinds of evidence
Small human reports on leave-on GHK-Cu creams describe fewer visible lines and wrinkles and less laxity. The Neurogan evidence map rates this research as pilot-stage with limited evidence, and notes that it does not extend to hair growth.
Neurogan evidence map · GHK-CuIn a small randomized, double-blind, split-face study, 18 healthy adults applied a 2% GHK-Cu serum to one eyebrow and a placebo to the other, twice daily for 12 weeks. Researchers reported improvements in eyebrow hair count and diameter. It studied eyebrows and a different 2% formula, not this scalp serum.
Bo et al., 2026A 2016 study evaluated a topical complex of GHK and 5-aminolevulinic acid in men with pattern hair loss and reported changes in hair count. Because GHK was one part of a combination, the effect cannot be attributed to GHK alone.
Lee et al., 2016A widely cited 2007 study found hair-follicle elongation ex vivo and dermal papilla cell effects in vitro with AHK-Cu, a related but different copper peptide.
Pyo et al., 2007They differ in which copper peptide they carry, how often you use them and how long a bottle lasts. Pick the one that suits your routine.
$60 a bottle
$1.00 a day · lasts about 60 days
Suits you if you want a once-daily GHK-Cu mist at the lowest price.
A subscription, delivered every 30 days. Pause or cancel any time.
$185 a bottle
$6.17 a day · lasts about 30 days
Suits you if you want both copper peptides in one spray.
$229 a bottle
$7.63 a day · lasts about 30 days
Suits you if you want the most AHK-Cu in one bottle, or AHK-Cu as its own step next to a GHK-Cu product.
30-day money-back guarantee
Bottle life assumes the suggested use and depends on how much you spray.
Reviews marked Verified Buyer are from confirmed purchases.
Customer reviews describe individual experiences with this product and are not clinical evidence.
Individual results vary. These are customer experiences, not a clinical study.
GHK-Cu is being studied for hair-related cosmetic uses, and this serum is made to support fuller-looking, healthier-looking hair. Human scalp-hair evidence is still limited: a small 2026 study reported higher eyebrow hair count and diameter with a different 2% GHK-Cu serum over 12 weeks. See the Lab results chapter for the research.
That has not been shown for this finished serum in a controlled human clinical trial. Some ingredient-level research is encouraging, but it is a cosmetic made to support the appearance of fuller hair, not a regrowth treatment.
The serum is designed to support the appearance of thicker, fuller-looking hair over time. Customer experiences vary, and there is no guaranteed amount of change.
Give it weeks rather than days. Hair changes slowly, so 8 to 12 weeks of daily use is a practical window to assess how your hair looks. There is no clinically established timeline for this product.
Apply a few sprays directly to a clean, dry scalp, focusing on areas where hair looks thinner. Massage gently, let it absorb and leave it on. Follow the product label for the amount and frequency.
Use it on a dry scalp, which makes it easier to place the serum where you want it without diluting it with water.
Yes. It is a leave-on scalp serum and does not need to be rinsed off.
No. Let the serum absorb and continue with your normal hair routine.
Either works. For a once-daily serum, using it consistently matters more than the time of day.
Once a day, as the product directions say. Using it more often is not automatically better. At that rate one 60 mL (2 oz) bottle lasts about 60 days, depending on how much you spray.
Like any topical product, it can cause local sensitivity in some people, such as redness, itching, irritation, burning or discomfort. Patch test first if your scalp is sensitive, and stop using it if a reaction persists.
Anyone with a known sensitivity to either ingredient. Do not apply it to broken or inflamed skin. Sudden, severe, patchy or progressive hair loss should be checked by a doctor, because cosmetic scalp products do not address every cause of hair loss.
There is no universal list. The practical concern is irritation. If you use minoxidil, exfoliating acids, retinoids or medicated scalp treatments, introduce one product at a time so it is easier to tell what your scalp tolerates. If you use a prescription treatment, ask your clinician how to combine them.
No. GHK-Cu and AHK-Cu are different copper-binding peptides, and research on one should not be attributed to the other. To use both, see the AHK-Cu + GHK-Cu Hair Serum Pro.
The blue color comes from the copper peptide itself. There is no added dye.
It can leave a temporary blue mark. The serum is water-based and designed to absorb into the scalp, but some customers see a tint on the scalp or on very light, white or silver hair. Apply a modest amount, spray at the scalp rather than the lengths and let it absorb fully before contact with light fabrics. Any tint washes out with shampoo.
Yes. A recent Qalitex certificate for lot DK25-CPH1-9 documented GHK-Cu potency plus heavy-metal and microbiological testing. The report is linked in the Lab results chapter.
We offer a 30-day money-back guarantee. If you are not happy for any reason, let us know and we will give you a full refund.
A concentrated 4% GHK-Cu formula, made with two ingredients for simple daily scalp use.
Adds a subscription, delivered every 30 days (about one bottle per delivery).
