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AHK-Cu

Peptide · Skin & cosmetics

Discussed mainly in cosmetic skin and hair models; medicinal benefit and safety are unconfirmed.

Not FDA/EMA approved
LibraryNo account · this device only

Also known as: Copper tripeptide AHK · Alanine-Histidine-Lysine copper

Use at a glance

AHK-Cu

Discussed mainly in cosmetic skin and hair models; medicinal benefit and safety are unconfirmed.

No reliable information available

No sufficiently clear source for amounts, intervals and cycles can be assigned to this profile. Concrete stages are therefore intentionally omitted; an invented number would be more dangerous than a visible data gap.

How is it used?
Topical products and injections must be considered separately. Skincare directions are not injection directions.
Does it need mixing?
There is no general injection-mixing instruction. Follow the manufacturer's information for a finished topical product.
View preparationCheck sources
More factsPeptide · Skin & cosmetics
Classification
Peptide · Skin & cosmetics
Research focus
Discussed mainly in cosmetic skin and hair models; medicinal benefit and safety are unconfirmed.
Evidence
Preclinical
Status
Not FDA/EMA approved

No generally accepted approved dose exists. Online amounts vary by material, purity, route and source and prove neither safety nor efficacy.

Schedule explained in detailCommunity/research information only

Amount status

No matching reference page and no validated human or injection dose. Ex vivo concentrations from hair follicle models must not be converted into mg or U-100.

Profile evidence level: preclinical.

Timing

Topical products are formulation-specific; systemic timing is not established.

No individual recommendation.

Cycle/duration

No clinically validated cycle.

No individual recommendation.

Mixing & calculations

There is no general injection-mixing instruction. Follow the manufacturer's information for a finished topical product.

All preparation informationProduct details and calculation examples from the available sources.

No general injection reconstitution. For finished cosmetic formulations, only their concentration and label apply.

Reconstitution & quantitiesOpen basics, units and sources
Explained in very simple termsBefore reading any number: this page reports what a product label, study or online community states. It does not say what any person should use.

Amount

mg or µg describe the mass of a substance. That is not the same as ml of fluid or U on a syringe. The number is only the amount stated by the identified source.

Interval

The interval only describes the time stated between two points. For example, once every 7 days does not mean daily and never justifies catching up or doubling.

Cycle

A cycle is a stated period that may include breaks. A community cycle proves neither effectiveness nor safety and does not prevent long-term risks.

Reconstitution

Reconstitution means mixing powder with a defined volume of fluid. This changes concentration, not the total amount in the vial. On U-100, 100 U equals exactly 1 ml of volume.

Not a guide to misuse

All community figures are shown only to place widely circulated online protocols in context. They are not instructions for self-use, injection, performance enhancement or any other misuse. Approved figures apply only to the exact named product, approved indication and medical supervision.

Research, risks & more detailsMechanism, adverse effects, storage, comparisons and common questions.

Mechanism: what is supported and what does not follow

Copper-binding tripeptide studied in skin and hair models

AHK-Cu is classified as “Copper-binding tripeptide studied in skin and hair models”. Discussed mainly in cosmetic skin and hair models; medicinal benefit and safety are unconfirmed. This describes the investigated pathway but does not validate a community use, amount, route or combination.

01

Copper-binding tripeptide

This studies how a short peptide binds copper ions and may support cell signalling in skin tissue, similar to a transport container for an important trace element. Collagen markers and cell activity in skin models are measured.

02

Skin matrix signalling

This examines how signals affect collagen and other structural proteins that give skin its firmness and elasticity, similar to studying the scaffolding beneath a building's surface. Researchers typically measure collagen production and skin structure in laboratory skin models.

03

Cell migration peptide

This studies how a peptide influences the migration of cells toward an injury site, similar to workers rushing to a construction site. Speed and extent of cell migration are measured in lab models.

What communities discuss

These themes describe discussions and vendor claims. They do not prove benefit, safety, product identity or suitable use.

Skin and hair anecdotes

Users exchange personal impressions of skin appearance, wrinkle depth, or hair growth after using cosmetically marketed peptides, usually based on their own photos rather than measurement devices. Such subjective impressions and marketing claims are not proof of a confirmed effect.

Vendor marketing claims

Vendors often advertise products with broad efficacy claims, comparison tables against competitors, and customer quotes. Such marketing statements are driven by sales interest and do not constitute independent scientific proof of efficacy.

Source and purity discussion

Discussion covers which vendors are seen as more trustworthy and how purity test results differ between batches. Such community assessments are based on limited samples and do not replace independent lab testing of each individual batch.

Adverse effects and safety risks

  • Topical substances can irritate, sensitise or cause contact allergy; injection or an unclear form greatly increases systemic, sterility and contamination risks.
  • Local reaction, infection, abscess and contamination are possible with any injection that is not professionally manufactured and administered.
  • A label or clear appearance does not exclude unknown purity, wrong identity, endotoxins or concentration errors.

Do not self-use / obtain clinical review

  • Open or infected skin, known allergies, pregnancy and unexplained skin changes should be assessed professionally before cosmetic or medical use.
  • Acute symptoms, allergic reaction, breathing difficulty, chest pain, neurological deficits or severe abdominal pain require immediate medical care.
  • Children and adolescents, pregnancy/breastfeeding, and people with relevant disease should not be part of unsupervised experiments.

Monitoring and laboratory markers

  • Skin reaction, documented area/concentration and stopping on irritation are more relevant than blood tests; systemic use requires separate medical assessment.
  • Baseline, objective, measurement timing and stop criteria must be defined professionally in advance. Individual laboratory values cannot compensate for unknown product quality.

Evidence boundary

Preclinical

Confirmed medicinal benefit has not yet been established.

Clinical evidence

Available data come mostly from animal or cell models; robust human efficacy and safety data are lacking.

AHK-Cu is discussed mainly in cosmetic hair and skin models, while GHK-Cu is studied more broadly around skin matrix and collagen signalling.

Storage and stability

  • The manufacturer label and prescribing information take priority. Storage instructions from a different product do not transfer.
  • Unapproved vials often lack dependable stability data before and after mixing; ‘2–8 °C’ or ‘28 days’ is not a universal standard.
  • Do not use after seal damage, particles, cloudiness, discoloration, unknown date or interrupted cold chain. Visual inspection does not prove sterility.

Troubleshooting and common errors

  • U-100 units measure volume, not drug amount: 100 U equals 1 mL. A wrong concentration makes every unit figure wrong.
  • Do not shake or dilute further to ‘fix’ cloudiness, particles or uncertain solubility; discard and obtain professional clarification.
  • Do not calculate a double or extra amount to compensate for missed use or an uncertain injection.
  • Without a COA, clear supplier, correct label and consistent vial information, identity is not confirmed.

Regulatory status and WADA

Not FDA/EMA approved

No FDA- or EMA-approved medicinal product; efficacy and safety are not established.

WADA 2026

The atlas has no explicit WADA flag for this profile. That does not automatically mean every form, route or related class is permitted in sport.

WADA — 2026 Prohibited List

Combinations / stacks

  • Combinations change effects, adverse effects and laboratory values; evidence for one substance does not establish the safety of a stack.
  • Overlapping pathways may add up. Hormonal, glucose, blood-pressure, coagulation, immune and sedating effects are important potential interactions.
  • Non-standardised blends prevent separate dosing, cause attribution and dependable reconstitution.

Frequently asked questions

Is an amount shown here a recommendation?

No. This page separates approved product information, study protocols and community information. No number or calculator is an individual dosing recommendation.

Does the U-100 calculator prove correct use?

No. It only converts mass, volume and syringe scale. It cannot check identity, purity, sterility, stability, solvent or medical suitability.

Can this profile be combined with other substances?

Safety of a combination cannot be inferred from a single-substance profile. Overlapping pathways, medicines and undefined blends can increase risk.

Which source controls when information conflicts?

For approved medicines, the current prescribing information and treating professional control. For research substances, conflict shows that no dependable self-use standard exists.

Are community claims clinical evidence?

No. Anecdotes can generate questions but do not replace controlled studies, regulatory review, or identity and quality testing.

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