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Highly stable peptides like BPC-157 may maintain activity for up to 45 days, while less stable peptides may begin degrading after 14-21 days
Core body temperature tends to decrease slightly at night, which can affect nerve sensitivity and blood flow, sometimes triggering itching in already-compromised skin
BioMed Research International (2015) The human tripeptide GHK-Cu in prevention of oxidative stres
Compatible with: Hyaluronic acid (for hydration) Niacinamide (for barrier support and tone) Growth factors Peptides (like Matrixyl or Argireline) Use with caution: Vitamin C (especially L-ascorbic acid) may destabilize copper peptides if mixed directly Retinoids can cause irritation when layered with GHK-Cu unless used at separate times (e.g., retinoid at night, GHK-Cu in the morning) AHAs and BHAs can lower skin pH and potentially reduce the effectiveness of copper peptides Spacing out these ingredients or consulting with a provider for a personalized routine can maximize benefits and avoid conflicts
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