AHK-Cu 50mg User Guide

This guide is for AHK-Cu 50mg. It covers topical water-based use, what internet injection protocols claim, side effects, and storage.

You can find this product here: AHK-Cu.

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ABOUT THIS PEPTIDE

AHK-Cu is a copper-binding tripeptide usually discussed around hair follicles, scalp care, dermal papilla cells, and skin repair. Its cosmetic ingredient name is Copper Tripeptide-3.

AHK-Cu is closely related to GHK-Cu, but they are not the same peptide. GHK-Cu has the broader skin and wound-repair history. AHK-Cu’s main published study exposed human hair follicles and cultured cells directly to the peptide. That study did not test a finished serum or an injection in people.

The most defensible real-world route is topical. There is no published human AHK-Cu injection trial, no established injectable dose, and no pharmacokinetic or systemic copper-safety data.

Quick notes:

• Best known for: topical scalp and hair-follicle research.
• Evidence level: one main ex vivo and cell study, no controlled human trial.
• Practical route: topical use in a water-based carrier.
• Main watch-out: copying GHK-Cu injection protocols onto a different molecule.

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SUPPLIES YOU’LL NEED

• 100mL plain water-based serum or cosmetic base, fragrance-free and intended for leave-on use
• Clean mixing container with a lid
• Small cosmetic spatula or stirrer
• Alcohol swabs for cleaning the vial stopper and work surface

Do not use an oil-only carrier. AHK-Cu is water soluble.

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TOPICAL MIXING

This guide uses 50mg of AHK-Cu in 100mL of water-based carrier. That makes a 0.05% solution, or 500 parts per million.

1. Clean the work surface, mixing container, and your hands.
2. Add a small amount of the water-based carrier to the AHK-Cu vial.
3. Swirl gently until dissolved. Do not shake.
4. Transfer the dissolved peptide into the rest of the carrier.
5. Mix slowly and label the container with the name, strength, and date.

Adding raw peptide to a finished serum can change its preservative balance and stability. A cosmetic base made for custom formulation is the better choice. Make smaller batches through a qualified formulator if you do not have a suitable preserved base.

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TOPICAL USE

Simple starting routine

• Patch test a small area for 24-48 hours.
• Apply a thin layer to a clean, dry scalp once daily.
• If tolerated after one week, continue once daily or move to twice daily.
• Give a hair-focused routine 8-12 weeks before judging it.

Use enough to lightly cover the target area. More product does not guarantee more penetration or faster hair growth.

Avoid the eyes, broken skin, infected areas, and recently irritated or microneedled skin. Do not combine it in the same application with strong acids, oxidizing vitamin C, peroxide products, or unknown copper-binding ingredients.

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WHAT ABOUT INJECTION?

Injection information exists online, but it is inconsistent and unsupported. Some blogs copy 50-200mcg a few times per week from general peptide routines. Other forums report 1-2mg daily by subQ injection. Those amounts differ by tenfold or more, and neither range comes from a human AHK-Cu study.

For reference only, adding 3mL of bacteriostatic water to this 50mg vial would make 1 unit about 0.167mg, or 167mcg. That is concentration math, not an injection protocol.

Units on syringe	AHK-Cu amount
1 unit	about 167mcg
3 units	0.5mg
6 units	1mg
12 units	2mg

Because there is no human injection safety study, this guide does not recommend a starting injection dose, facial injection, scalp injection, or a cycle. Topical use matches the actual evidence better.

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SIDE EFFECTS AND CAUTIONS

Topical use may cause redness, itching, dryness, burning, rash, or scalp irritation. Stop and wash the area if irritation is strong or persistent.

Systemic and injected risks are unknown. Copper exposure raises extra concern for people with Wilson disease or another copper-metabolism disorder, liver disease, copper-chelating medication, active cancer, pregnancy or breastfeeding.

Get medical help for facial swelling, hives, trouble breathing, severe eye exposure, or a rapidly worsening skin reaction.

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STORAGE

Keep the powder cold, dry, and dark. Store a mixed topical product according to the cosmetic base instructions, preferably refrigerated if the base allows it. Discard it if the smell, color, texture, or clarity changes or if contamination is possible.

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RESEARCH NOTES

• https://pubmed.ncbi.nlm.nih.gov/17703734/
• https://ahk-cu.com/blogs/news/is-ahk-cu-injectable
• https://www.reddit.com/r/HairlossResearch/comments/1sh5wlc/ahkcu_dose_reconstitute_questions/