Ingredient or product comparison
Does GHK-Cu Need Refrigeration Storage: Storage Type Comparison
Freezer (ideal for long-term) −20°C to −30°C 12–24 months Not recommended (freeze-thaw damage) Minimal. Molecular motion arrested Best for unopened lyophilised powder; avoid for reconstituted solutions Refrigerator (standard post-reconstitution) 2–8°C 6–12 mon
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- Freezer (ideal for long-term)
- −20°C to −30°C
- 12–24 months
- Not recommended (freeze-thaw damage)
- Minimal. Molecular motion arrested
- Best for unopened lyophilised powder; avoid for reconstituted solutions
- Refrigerator (standard post-reconstitution)
- 2–8°C
- 6–12 months
- 28–60 days
- Slow. Hydrolysis and oxidation proceed at 25% room-temperature rate
- Required for all reconstituted GHK-Cu; use amber vials or foil wrap
- Room temperature (short-term only)
- 20–25°C
- 1–3 months
- 3–7 days
- Fast. Potency loss of 15–25% in first week
- Acceptable only for unopened lyophilised powder in climate-controlled environments
- Elevated temperature (avoid)
- Above 30°C
- Days to weeks
- Hours to 48 hours
- Severe. Peptide bonds cleave, copper dissociates
- Complete loss of biological activity; discard any vial exposed for >24 hours