Research Library / Tissue Research / AHK-Cu
Tissue Research researchAHK-Cu
Copper tripeptide-3 · Alanine-histidine-lysine copper complex
A synthetic copper tripeptide complex studied in isolated human hair follicles and cultured dermal papilla cells. The listed community topical example describes a 0.025–1% concentration, once or twice daily; no injectable dose is established by that percentage. An illustrative 50 mg vial at an assumed 2 mL final volume yields 25 mg/mL; diluent compatibility remains product-specific. For research and education only, not personal medical guidance.
Quick Reference
- Example vial
- 50mg
- Assumed final volume
- 2mL · not an amount to add
- Concentration
- 25mg/mL · conditional arithmetic
- One U-100 marking
- 250mcg in 0.01 mL
Hypothetical vial math does not reproduce a study formulation or verify a diluent, sterility or storage period.
Research schedules
Concentration-based exposure in isolated follicles and cultured cells
Isolated human hair follicles and dermal papilla cells; not administered to peopleArchives of Pharmacal Research, 2007Reported schedule context
- Range
- 0.025–1% topical preparations discussed
- Frequency
- Once or twice daily
- Route
- Topical
- Reported half-life
- Not established
- Reported cycle
- Formulation- and study-dependent
No published human injectable schedule has been established. The 50 mg and 100 mg entries are vial-strength arithmetic, not doses.
Cross-reference reviewed October 2026. Half-life and cycles retain this source context.| Context / phase | Amount | Schedule total | Frequency | Timing | Route | Evidence |
|---|---|---|---|---|---|---|
| Community topical concentration context | 0.025–1% | Formulation-dependent | Once or twice daily | Scalp or skin research area | Topical | Community-reported |
| No established injectable schedule | Not established | Not established | No consistent pattern | Not established | Injectable route not established | No consistent community schedule |
Repeated community reports do not establish identity, safety, effectiveness or an appropriate exposure. Component schedules do not validate a same-vial blend.
Vial calculator
Linked to Quick Reference and compatible supply calculations.
Read the needle-side edge of the black stopper. Liquid tint is illustrative.
Scale illustration · one U-100 marking = 0.01 mL.
Arithmetic yield at this example amount
50 example portions per vial
50 full amounts; 0 mg remaining. Yield is not a storage or reuse period.
See the calculation
Concentration = vial content ÷ final volume. Volume = example amount ÷ concentration. U-100 markings = mL × 100.
Original example & formulation context
1 mg arithmetic example · 25 mg/mL · 0.04 mL · 4 units
50 mg is the total vial content, not an established dose. At 25 mg/mL, 1 mg calculates to 0.04 mL or 4 U-100 units. AHK-Cu is a copper complex; the salt form and vehicle matter. A supplier reports laboratory PBS solubility for its hydrochloride material, not a validated injectable preparation. The calculation assumes the stated final solution volume, which may differ from liquid added. It does not verify dissolution, solvent compatibility, sterility, chemical stability or storage. See the source-linked preparation notes below.
Supplies & vial yield
Supply total not calculated
50 mg (hypothetical) · 2 mL assumed final solution volume; diluent product-specific
No single, consistently reported subcutaneous amount-and-frequency pair is available for a responsible automatic supply calculation.
*Conditional mass and final-volume arithmetic. No stability, sterility, safe reuse period or verified diluent quantity is established. Cleansing materials, sterile supplies, labels and sharps disposal follow the actual research procedure.
Protocol overview & research context
- Identity
- AHK-Cu · Copper tripeptide-3 · Alanine-histidine-lysine copper complex
- Evidence / status
- In vitro / ex vivo. Preclinical — not FDA approved
- Clinical route, frequency & duration
Human hair-follicle laboratory study: Concentration-based exposure in isolated follicles and cultured cells
- Community purpose
- Hair-follicle, scalp, dermal-papilla, and cosmetic hair-density research discussions.
- Reported timing / route
- Once or twice daily · Topical. Schedule-specific timing remains in the Community tab.
- Reported half-life
- Not established · community-reference context, not a shelf life.
- Reported cycle
- Formulation- and study-dependent. Planning horizons do not establish a validated cycle.
Loading, titration and maintenance
A separate loading phase is not identified in this library entry. Titration, maintenance and stopping rules depend on the specific product or study; a listed range is not automatically an escalation plan.
Reconstitution & formulation
AHK-Cu is a copper complex; the salt form and vehicle matter. A supplier reports laboratory PBS solubility for its hydrochloride material, not a validated injectable preparation.
Other vehicles and approaches discussed
The 25 and 50 mg/mL cards are conditional arithmetic. A lower tested concentration in PBS neither validates those examples nor establishes a universal maximum in every solvent.
- Evidence context
- Product / laboratory / report distinctions apply
- Cloudiness / gel signal
- Copper-complex / precipitation concern; product-specific
- Product details to verify
- Verify the exact product, sequence/salt form, buffer and excipients, concentration, route, container and product-specific storage instructions.
Sources apply to the named product, laboratory method or report only. Laboratory solvents and community repetition do not establish an injectable preparation, sterility, chemical stability or a beyond-use period. No solvent-mixing or salvage recipe is provided.
Preparation references reviewed October 20, 2026.
Preparation documentation checklist
- Confirm identity, nominal content, salt form, buffer and excipients.
- Verify the actual product's diluent, amount to add and intended method.
- Calculate concentration from final solution volume, and cross-check units.
- Record lot, concentration, diluent, preparation date, storage and discard instructions.
This checklist does not replace a validated preparation procedure.
Storage, clarity & stability
- Unopened product
- Follow its documented temperature, light protection, shipping and expiration requirements.
- Prepared material
- Chemical stability and microbial safety are formulation-specific. A diluent bottle's discard period does not establish the compound's storage period.
- Visible-change context
- Copper-complex / precipitation concern; product-specific
Unexpected cloudiness, particles or gel
For a product intended to form a clear solution, do not use or attempt to salvage unexpected persistent clouding, strings, precipitate, thickening or gel. Labeled suspensions, including some triptorelin depots, have their own expected appearance and instructions.
Why vial yield does not establish shelf life
Arithmetic portions assume the material remains usable. Chemical degradation, contamination, handling losses and required discard limits may reduce practical yield. Freezing, warming, acidifying or further diluting cannot be assumed to restore quality.
No universal refrigerated, room-temperature or 90-day beyond-use period is assigned by the calculator.
How it works
Copper-binding signaling studied in dermal-papilla and hair-follicle models
A synthetic copper tripeptide complex studied in isolated human hair follicles and cultured dermal papilla cells. Published evidence does not establish an injectable human protocol.
Community-reported purpose
Hair-follicle, scalp, dermal-papilla, and cosmetic hair-density research discussions.
Reported purposes and marketing use-cases are not an approved indication or proof of efficacy.
Clinical findings & study landscape
Human hair-follicle laboratory study
Protocol: Concentration-based exposure in isolated follicles and cultured cells
Population: Isolated human hair follicles and dermal papilla cells; not administered to people
Read the cited evidenceFindings apply to the tested product, population and methods. A registry listing, mechanistic study or evidence-landscape link is not itself proof of efficacy or validation of an online vial.
Safety, evidence limits & regulatory status
Compound-specific safety context
No published human injection dose, pharmacokinetic profile, or injection-safety standard has been established. Topical and laboratory findings cannot validate systemic injection.
Development and regulatory status
Preclinical — not FDA approved
Approval of a named product does not extend to every vial, formulation, route, blend or indication carrying a related name.
What this guide cannot establish
The library does not authenticate a product or determine a personal starting dose, missed-dose rule, restart regimen, interaction plan or combination protocol. Study schedules, community reports and vial calculations retain separate evidence labels.
Frequently asked questions
What is AHK-Cu?
A synthetic copper tripeptide complex studied in isolated human hair follicles and cultured dermal papilla cells. Published evidence does not establish an injectable human protocol.
Copper-binding signaling studied in dermal-papilla and hair-follicle models
Does vial strength mean the amount per administration?
No. A vial's label states nominal contents. The amount used in a study belongs to its assigned product and protocol. Changing vial strength changes concentration and yield, not the study's assigned amount.
Why does changing final volume change the U-100 value?
A larger final volume reduces concentration for the same mass. U-100 markings are volume measurements: one marking equals 0.01 mL. They are not biological international units of a peptide.
What happens when a calculation exceeds one syringe or vial?
Available mass and syringe capacity are separate limits. The calculator flags a result above 1 mL; it does not provide a splitting or combining technique.
Is there a loading phase or standard cycle?
A separate loading phase is not identified in this entry. Do not infer one from a range of reported amounts.
Formulation- and study-dependent
Which diluent and storage period should this material use?
AHK-Cu is a copper complex; the salt form and vehicle matter. A supplier reports laboratory PBS solubility for its hydrochloride material, not a validated injectable preparation.
Calculation examples do not establish solvent compatibility, sterility or shelf life.
Where do I track or calculate a multi-phase schedule?
The Free Planner supports saved research examples and multi-phase planning. This guide's calculator is local to the page and does not save a protocol automatically.
Open Free PlannerReferences & evidence trail
- Clinical / regulatory / evidence landscapeArchives of Pharmacal Research, 2007: Human hair-follicle laboratory study
- Laboratory supplier or secondary reference — product-specificCayman AHK-Cu hydrochloride specifications
Clinical sources remain attached to their studies; laboratory and community formulation sources retain their own limits. Preparation review dates do not imply that every clinical study was newly reviewed today.
Independent educational research reference. Not medical advice or an individualized dosing recommendation.