Peptide library / GHK-Cu

GHK-Cu

Copper peptide discussed for skin, hair and tissue repair.

Peptide & blend guide

The short version

Why people discuss it
Discussed for skin appearance, hair quality and tissue repair. Topical cosmetic use and experimental injections have very different evidence and risk profiles.
What it is
A copper-binding tripeptide. A cream or serum is not equivalent to an injectable preparation; concentration also depends on the finished formulation.
Biggest caution
FDA flags potential immune reactions and peptide impurities for injectable GHK-Cu, with limited human safety information. Cosmetic experience does not establish injection safety.
Stack context
Appears in the four-ingredient KLOW blend. Ingredient research does not validate that combination.

Dose and frequency reference

Reference only — not a recommendation. Amounts describe source-specific community examples, selected study regimens or the named product label. They do not establish safety, effectiveness, product identity, or a suitable dose for any person. Never convert mg, mcg, or IU into syringe “units” without the exact product concentration.

Sources report different amounts or schedules; the reference below is a named example, not a consensus.

Subcutaneous injection

Community reference · Not clinical guidance
Amount
0.5–1 mg
Frequency
Once daily
Duration / phase
4–8 weeks

Peptidepedia’s lower reported range. PeptideDosages describes a higher, longer and less frequent schedule. Human topical cosmetic research does not validate either injectable schedule. Reference only; this does not establish safety, effectiveness or individual suitability.

Community source · reviewed 2026-09-27

Subcutaneous injection — higher reported convention

Community reference · Not clinical guidance
Amount
1–2 mg
Frequency
Once daily on 5 days weekly
Duration / phase
8–16 weeks

Source-specific alternative; do not combine this amount with a different source’s frequency and call the result a consensus.

Community source · reviewed 2026-09-27
Compare reported schedules

Saved source material reviewed 2026-09-27. Multiple pages from one publisher count as one source family; agreement does not establish what most people use. SC means subcutaneous; IM intramuscular; IP intraperitoneal.

Evidence & sources · Route-specific evidence

Community references document claims and reported practices. They are not clinical evidence. Some references contain supplier promotions or market treatment; their commercial context is identified in the source label.

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