Rated 4.3 out of 5 stars

Péptido AHK-Cu, elixir capilar 4800 mg

Healthier Scalp. Stronger Follicles. Hair That Sticks Around.

Give thinning hair a fighting chance with 4800mg of AHK-Cu, a next-generation copper peptide that targets hair follicles directly. Early research suggests AHK-Cu may support follicle longevity more effectively than standard copper peptides, keeping hair-root cells alive longer where it counts.

Targets follicles at the root to support a healthier growth environment

4800mg AHK-Cu at 8% concentration, 2x our GHK-Cu serum

Lightweight spray formula that layers with your existing routine

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What Can GHK-Cu Serum Do for Your Skin?

AHK is a tripeptide made from the amino acids alanine, histidine and lysine. When it binds with copper, it forms AHK-Cu, a copper peptide used in topical cosmetic formulas for the scalp and hair.

AHK-Cu is commonly associated with the ingredient name Copper Tripeptide-3. It is structurally related to GHK-Cu, but the two peptides are not identical. AHK-Cu is more commonly positioned in hair and scalp products, while GHK-Cu has a broader history of use in skin and scalp-care formulas.

Neurogan Health AHK-Cu Copper Peptide Hair Serum contains 4,800mg of AHK-Cu in an 8% water-based scalp spray. It is designed for direct cosmetic application to areas where hair looks thin or sparse.

Laboratory research has examined AHK-Cu in isolated human hair follicles and cultured dermal papilla cells. These findings are promising, but they do not establish that this finished serum clinically treats hair loss or regrows hair in every user. [1]

Use this product as part of a consistent scalp-care routine. It is not an oral supplement, injectable peptide or FDA-approved hair-loss treatment.

Usage: Apply the serum directly to clean scalp areas according to the current product-label directions. Massage gently with clean fingertips and allow it to dry before applying other products.

Explore the differences between AHK-Cu and GHK-Cu in our complete comparison guide.

Description

El péptido capilar AHK-CU de 4800 mg favorece el crecimiento capilar, la circulación del cuero cabelludo y la regeneración de la piel. El tripéptido de cobre-3 favorece la circulación sanguínea, mejora la densidad capilar y nutre la barrera cutánea.

Uso: Aplique 2 a 4 pulverizaciones profundamente en el cuero cabelludo 1 a 2 veces al día y masajee para favorecer la circulación y la densidad del cabello.

Por el momento solo se utiliza para INVESTIGACIÓN.

Ingredients

This serum combines AHK-Cu with a distilled water base.

AHK-Cu
Distilled Water

The formula contains no added fragrance according to the current ingredient list. Patch test before broader use, because even simple topical formulas may cause irritation in some users.

Lab Results

Our Péptido AHK-Cu, elixir capilar 4800 mg are third-party lab tested to ensure highest quality, purity, and safety.

Available laboratory reports provide additional information about the ingredient or tested production batch. Depending on the individual report, testing may cover:

Ingredient identity
Peptide purity
Contaminants
Raw-material specifications
Batch-specific or finished-product measurements

A Certificate of Analysis only supports the measurements included in that particular report. Raw-ingredient testing should not automatically be interpreted as finished-product testing. Review the current documents to confirm exactly what was tested.

AHK-Cu Peptide Hair Spray Lab Report 2026

AHK-Cu Hair Elixir 4800mg Lab Report 2026

View Lab Results

Week 2 to 4

Month 1 to 2

Month 3+

Week 2 to 4

What's Happening: The AHK-Cu is absorbing into the scalp and getting to work on the follicle environment. Peptides begin signaling to hair-root cells, supporting their ability to stay active longer. Scalp dryness and irritation may start to calm down.

What to Expect: You probably won't see visible changes yet, and that's normal. This phase is about building the right conditions underneath the surface. Keep showing up twice a day.

✓ Formulated with Clinically Studied Ingredients

Carefully formulated with clinically studied ingredients and rigorously third-party tested for quality and consistency.

Month 1 to 2

What's Happening: With consistent application, the follicle environment is shifting. Hair-root cells that would normally die off prematurely are getting more support. You may notice your scalp feels calmer, less dry, and generally healthier.

What to Expect: Existing hair may start to feel a bit stronger. Some people notice less hair in the shower drain or on their pillow. Fine "baby hairs" may begin to appear in thinning areas.

✓ Formulated with Clinically Studied Ingredients

Carefully formulated with clinically studied ingredients and rigorously third-party tested for quality and consistency.

Month 3+

What's Happening: This is where consistency pays off. Follicles that have been receiving steady AHK-Cu support are producing hair in a healthier growth cycle. New growth has had time to come in thicker and more visible.

What to Expect: Fuller-looking coverage in areas that were thinning. Hair that feels stronger overall. The difference between month one and month three is real, and it compounds from here.

✓ Formulated with Clinically Studied Ingredients

Carefully formulated with clinically studied ingredients and rigorously third-party tested for quality and consistency.

✓ Formulated with Clinically Studied Ingredients

Carefully formulated with clinically studied ingredients and rigorously third-party tested for quality and consistency.

Follicle-Targeted Support

AHK-Cu was designed to work directly on hair follicles, not just the scalp surface. Research suggests it may help hair-root cells resist early die-off, keeping follicles productive longer.

4800mg: Double the Dose, Direct to the Scalp

At 8% concentration, this elixir delivers 4800mg of AHK-Cu per bottle. That's 2x the active peptide content of our GHK-Cu hair serum, applied right where it matters.

Calmer, Healthier Scalp

Dry, irritated scalps aren't great at growing hair. AHK-Cu peptides help create a more balanced scalp environment: less flaking, less tightness, better conditions for growth.

Works With What You Already Use

The water-based spray dries fast and layers under or over your existing products. No greasy residue, no reformulating your entire routine around one product.

Two Ingredients. Nothing Else.

AHK-Cu and distilled water. No sulfates, no parabens, no fragrance, no fillers. You can actually read the entire ingredient list in about two seconds.

Supports the Growth Cycle Where It Starts

Rather than masking thinning with volumizers, AHK-Cu works at the follicle level to support the anagen (growth) phase. It addresses the root cause, not the symptom.

AHK-Cu is a copper peptide tripeptide specifically studied for its interaction with hair follicle cells. In laboratory research, AHK-Cu helped hair-root cells (dermal papilla cells) survive longer than untreated controls, suggesting it may have a more targeted effect on follicle health compared to broader copper peptides like GHK-Cu. Our 4800mg concentration delivers that peptide at a dose most brands don't come close to matching.

Clean, pharmaceutical-grade distilled water carries the active ingredient without introducing anything that could irritate a sensitive scalp or interfere with absorption.

No artificial additives

No unnecessary fillers

No low-quality ingredients

No artificial colors or flavors

How We Compare

Feature	AHK-Cu	GHK-Cu
Full Name	Alanine-Histidine-Lysine Copper	Glycine-Histidine-Lysine Copper
Typical Cosmetic Use	Hair & scalp products	Skin & scalp products
Research Focus	Hair follicles & dermal papilla cells	Skin remodeling & broader copper peptide research
Product Format	Scalp sprays & serums	Serums, creams & scalp products
Best For	Scalp-focused routines	Broader skin and scalp care

FDA disclaimer

For external use only.

Avoid contact with the eyes.

Patch test before first use.

Do not apply to broken or severely irritated skin.

Discontinue use if persistent redness, itching, burning or swelling occurs.

Keep out of reach of children.

Consult a qualified healthcare professional before combining this product with prescription scalp treatments or before use during pregnancy or breastfeeding.

This cosmetic product is not intended to diagnose, treat, cure or prevent any disease.

Customer Reviews

4.3

Rated 4.3 out of 5 stars

Based on 6 reviews

Total 5 star reviews: 3

Total 4 star reviews: 2

Total 3 star reviews: 1

Total 2 star reviews: 0

Total 1 star reviews: 0

Customers Talked About

6 reviews

Sort

J
Jasmin
Verified Reviewer
Rated 5 out of 5 stars
6/27/26
Eyebrows
Because everyone takes this for hair growh- i thougt i will test this on my eyebrows.
When i was young i was plucking my eyebrows - thin brows were the ,,it thing"- but then they stopped growing when i was 20 years old...
Now i am 44- and first time since i was young- my eyebrows are growing back fuller and where i plucked them when i was younger.
I am so happy!!
Was this helpful?
SF
Stephen F.
Verified Buyer
Rated 4 out of 5 stars
6/10/26
Results
Took a couple months, but using this once or twice a week and pairing with GHK CU and a dermastamp, finally seeing results that I never saw with typical minoxidil.
Was this helpful?
MS
Mayette S.
Verified Buyer
Rated 3 out of 5 stars
6/7/26
Too Soon
It has only been a month and it's too soon to know it's efficacy. There's been no noticeable effects so far.
Was this helpful?
AA
Anwar A.
Verified Buyer
Rated 4 out of 5 stars
5/11/26
AHK-Cu Peptide topical Serum
Purchased the AHK-Cu Peptide Serum. Application has been by spray daily; once in the morning and once at night. I also use it with a scalp massage gadget. I don't place as much in the morning since I will be at work and will dry blue (but not stain). Advice to let it dry before going to bed though. Have been using it now for about 2-3 weeks. Still too early to notice difference but will continue for a 90 day period and hopefully have visible results.
Was this helpful?
J
Jeff
Verified Buyer
Rated 5 out of 5 stars
1/16/26
THE BEST!
I've used many different treatments for thinning hair, I've started using their AHK-Cu peptide, 2400mg, went through 3 bottles and had good results. I'm about halfway through the 4800mg bottle and I'm seeing excellent results! Will continue using!
Was this helpful?
HK
heather k.
Verified Buyer
Rated 5 out of 5 stars
10/14/25
satisfied
I am totally satisfied with this product. I think it is easy to apply and has no odor. The dark color will stain your scalp but wipes right off with a damp rag. I am only half way through the bottle so at this point I have not noticed any significant change in the spots I am applying. I will definitely order another bottle as my healthcare worker suggested at least 3 months and I am combining this with other protocol.
Company was easy to work with and arrived on timely manner.
Was this helpful?

Morning. Night. That's the Routine.

Step 1

Spray Onto a Clean Scalp

Start with a clean, towel-dried (or fully dry) scalp. Apply 3 to 5 sprays directly to thinning areas or across the scalp for broader coverage. Part your hair to expose the scalp where you need it most.

Step 2

Massage In for 30 to 60 Seconds

Use your fingertips to work the elixir into the scalp. This helps with absorption and gets blood flowing to the follicles.

Step 3

Let It Dry, Then Layer

The water-based formula dries in a couple of minutes. Once dry, you can apply other hair products: styling products, oils, whatever your routine includes. Apply once in the morning and once before bed; consistency is what makes this work, and most people start noticing changes around weeks 9 to 12 with daily use.

The Research Behind AHK-Cu

AHK-Cu is a copper-binding tripeptide that has been investigated in laboratory models involving human hair follicles and dermal papilla cells.

The strongest directly relevant study was published in 2007 and evaluated isolated human hair follicles (ex vivo) together with cultured human dermal papilla cells (in vitro). [1]

These findings are promising because dermal papilla cells play an important role in hair-follicle biology. However, laboratory studies should not be interpreted as proof that a finished topical serum will produce identical results in real-world users.

The current evidence supports continued research into AHK-Cu while highlighting the need for additional human clinical studies.

01 Supports Follicle Cell Survival

In laboratory conditions, AHK-Cu helped dermal papilla cells resist apoptosis, the programmed cell death that can cause follicles to miniaturize over time. Hair-root cells treated with AHK-Cu stayed alive longer than untreated controls. [1]

02 More Follicle-Specific Than GHK-Cu

03 Builds on the Copper Peptide Foundation

Who It's For

Who Is This GHK-Cu Serum For?

This is perfect for you if…

✓You're 30+ and starting to notice thinning, especially around the crown or hairline.

✓Your scalp feels dry, tight, or irritated, and you suspect that's not helping your hair situation.

✓You already use our GHK-Cu serum and want a more follicle-targeted peptide to add to the routine.

✓You want something backed by real research, not marketing buzzwords about "volumizing technology."

✓You prefer a clean formula: two ingredients, no fillers, no fragrance.

✓You've tried Minoxidil or Finasteride and want a non-hormonal, peptide-based alternative.

This might not be for you if…

✕You're expecting visible results in a week. This takes 9 to 12 weeks of consistent twice-daily use.

✕You have complete baldness in the area of concern. AHK-Cu supports existing follicles and works best where follicles are still active, even if they're producing fine or thin hair.

✕You're looking for a one-product miracle. Peptides work best as part of a healthy routine that includes sleep, nutrition, and stress management.

What is AHK peptide?

AHK is a tripeptide made from alanine, histidine and lysine. When combined with copper it becomes AHK-Cu, a copper peptide commonly used in topical scalp-care products.

What is AHK-Cu used for?

AHK-Cu is used as a cosmetic ingredient in topical scalp products designed to support a healthier-looking scalp environment and the appearance of fuller-looking hair.

Does AHK-Cu regrow hair?

Current laboratory research is promising, but it does not prove that topical AHK-Cu regrows hair in people. Results vary and the product should not be considered a treatment for hair loss. [1]

What did the 2007 AHK-Cu study find?

Researchers observed increased hair-follicle elongation and dermal papilla-cell proliferation under laboratory conditions using isolated human follicles and cultured cells. [1]

Are there human clinical trials?

The strongest directly relevant evidence comes from laboratory and ex vivo research. More human clinical studies are needed before stronger conclusions can be made. [1]

How do I use AHK-Cu Hair Serum?

Apply the serum directly to clean scalp areas according to the current product-label directions. Massage gently and allow it to dry before applying other hair products.

How often should I apply it?

Follow the instructions on the product label. Consistency is generally more important than applying excessive amounts.

How long does AHK-Cu take to work?

Hair appearance changes gradually. Many users evaluate topical scalp products after several months of consistent use rather than after only a few weeks.

Can I use it every day?

Yes, when used according to the current product directions.

Can I use it with GHK-Cu?

Yes. Some people include both peptides in their overall scalp and skincare routine because they have different cosmetic positioning.

Can I use it with minoxidil?

If you use prescription or over-the-counter hair-loss treatments, speak with your healthcare provider before combining products.

Can I apply it after microneedling?

Follow the instructions provided by your healthcare professional or device manufacturer. Avoid applying topical products to damaged skin unless directed.

What are the possible side effects?

Possible reactions include redness, itching, dryness, burning or localized irritation. Stop use if irritation persists.

Will it stain my scalp?

The blue color comes from the copper peptide. Allow the serum to dry before contact with clothing or bedding.

Can it restore completely bald areas?

No cosmetic scalp serum can guarantee restoration of areas where follicles are no longer active.

Is this product fragrance-free?

The current ingredient list contains only AHK-Cu and distilled water.

Where can I read customer reviews?

Verified customer reviews are available on this product page.

Where can I find the lab results?

Available product documentation can be reviewed through the Neurogan Health Lab Results page.

Where can I buy AHK-Cu Hair Serum?

The product is available directly through the Neurogan Health website with one-time purchase and subscription options.

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Try It for 30 Days

Explore AHK-Cu Copper Peptide Hair Serum with the confidence of Neurogan Health's 30-day money-back policy. If the product isn't the right fit for your routine, contact our support team within the applicable return period.

Subscription orders may be paused or canceled according to the current subscription terms.

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References

Pyo HK, Yoo HG, Won CH, et al. The effect of tripeptide-copper complex on human hair growth in vitro. Archives of Pharmacal Research. 2007;30(7):834-839.
U.S. Food and Drug Administration. Cosmetics Labeling Claims.
Cosmetic Ingredient Review Expert Panel. Safety Assessment of Copper Peptides Used in Cosmetics.

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