GHK-Cu: Half-Life, Tracking & Reference
Frequently tracked for topical or cosmetic-support routines.
| Category | Skin / Hair |
|---|---|
| Typical half-life | about 1 hour |
| Essentially cleared in | roughly 5 hours (~5 half-lives) |
| Common routes | Topical, Injection |
Half-life, explained with GHK-Cu's numbers
A half-life of about 1 hour means that after that much time, about half of an absorbed amount remains. Each additional half-life halves it again:
| Elapsed time | Estimated amount remaining |
|---|---|
| 1 half-life (1 hour) | 50% remaining |
| 2 half-lives (2 hours) | 25% remaining |
| 3 half-lives (3 hours) | 12.5% remaining |
| 4 half-lives (4 hours) | 6.25% remaining |
| 5 half-lives (5 hours) | 3.125% remaining |
This is why spacing and consistency matter more than any single dose time, and why short-half-life compounds are often scheduled more frequently than long ones. You can see this curve for your own logged schedule in the levels visualizer or automatically in the app.
What it’s tracked for
- Cosmetic routine tracking
- Photo progress tracking
Reported side effects
- Skin irritation
- Dryness
Safety notes
Topical and injectable routes should not be treated as interchangeable.
- Review application method with a provider
Often tracked alongside
- Useful with photo check-ins
Research context
- Copper peptide dermatology research
Frequently asked questions
- What is the half-life of GHK-Cu?
- The commonly referenced elimination half-life of GHK-Cu is about 1 hour. Half-life is the time it takes for the amount of a compound in the body to fall by half; it is the basis for estimating how levels rise and fall between doses.
- How long does GHK-Cu stay in your system?
- As a rule of thumb, a compound is considered essentially cleared after about five half-lives. For GHK-Cu, with a half-life of about 1 hour, that works out to roughly 5 hours. Individual factors like metabolism, dose, and route of administration all shift this, so treat it as an estimate, not a measurement.
- How is GHK-Cu administered?
- GHK-Cu is most commonly tracked with these routes: Topical, Injection. Route affects how quickly a compound is absorbed and how long it acts; your provider determines what is appropriate for you.
- What do people track GHK-Cu for?
- Frequently tracked for topical or cosmetic-support routines. PeptideWiz is a tracking tool: it records what you and your provider have decided, and does not recommend any compound or dose.
Not medical advice. This page is an educational reference
for people who track provider-directed protocols. It does not recommend GHK-Cu or any
dose, and half-life figures are commonly cited estimates that vary between individuals and
formulations. Always work with a licensed medical provider.