← GHK-Cu overview

GHK-Cu Dosage & Reconstitution Guide

Research and educational use only — not medical advice, and not for human consumption. The figures below are summarized from public sources, product labeling, and community reports, and are not a prescription or a substitute for a qualified clinician.

Typical dose
1-2 mg
Route
Subcutaneous injection
Frequency
once daily (injectable) or nightly (topical)
After mixing
25 mg/mL (25000 mcg/mL)

Reconstitution

GHK-Cu ships as a freeze-dried (lyophilized) powder that has to be mixed with bacteriostatic water before use. Draw 2 mL of bacteriostatic water into a syringe and add it to a 50 mg vial, letting the stream run down the inside wall of the glass rather than blasting the powder directly. Swirl gently — never shake — until the solution is clear, then keep it refrigerated.

Worked example. 2 mL into a 50 mg vial gives a concentration of 25 mg/mL (25000 mcg/mL). A 2 mg dose then works out to 0.08 mL = 8 units on a U-100 insulin syringe. Scale the water volume up or down to make your target dose land on an easy-to-read mark (1 unit = 0.01 mL).

  1. Wipe both vial stoppers (peptide and bacteriostatic water) with an alcohol swab and let them dry.
  2. Draw 2 mL of bacteriostatic water into a syringe.
  3. Inject it slowly against the inside wall of the peptide vial.
  4. Swirl gently until fully dissolved; do not shake.
  5. Label the vial with the contents, concentration, and date, and store it in the refrigerator.

Dosing schedule

Phase Dose Volume Insulin units (U-100) Notes
Weeks 1–2 1 mg 0.04 mL 4 units once daily
Weeks 3+ 2 mg 0.08 mL 8 units once daily

Timing & cycling

Injectable: once daily, any consistent time. Topical: nightly on clean skin, sunscreen in the morning.

Cycle length. Injectable courses usually run 4–6 weeks. Topical use is continuous.

Storage & handling

Keep the lyophilized (unmixed) vial refrigerated at 2–8 °C (36–46 °F) in a dry, dark place — it tolerates short periods at room temperature during shipping. Once reconstituted, store it at 2–8 °C, never frozen, and use it within about 2–4 weeks (sooner if the solution turns cloudy or discolored). Swab the stopper before every draw and use a fresh needle each time.

Supplies you'll need

  • GHK-Cu vials — about 3 for an 8-week run at the upper dose
  • Bacteriostatic water — 2 mL per vial (a 10–30 mL multi-dose bottle covers several vials)
  • U-100 insulin syringes (0.3–0.5 mL / 30–50 unit barrels are easiest to read) — roughly 56 for 8 weeks, plus spares
  • Alcohol swabs — one per injection and one per vial draw
  • Sharps container for safe needle disposal

Key points

  • Injections sting and can leave temporary blue-ish marks at the site — the copper color is normal.
  • Topical 1–3% serums cover most cosmetic goals without needles.
  • Copper load is real at high chronic doses; do not run high-dose injectable indefinitely.

What to monitor

For skin goals, photos every 2 weeks beat memory.

Legal & prescription status

No prescription needed for the cosmetic form — it is an over-the-counter skincare/haircare ingredient found in serums and creams. The injectable form, by contrast, is an unapproved research chemical with no legal prescription route and is labelled 'not for human consumption.'

References

  1. doi.org
  2. doi.org
  3. doi.org
  4. doi.org
  5. doi.org
  6. doi.org

This guide is for research and educational purposes only. It is not medical advice and does not describe a product approved for human use. Always consult a qualified healthcare professional before considering any peptide protocol.