Comparison
GHK-Cu vs Retinol Anti-Aging Comparison: Stability, Formulation, and Real-World Application Challenges
Retinol is notoriously unstable in the presence of light, oxygen, and water. Oxidative degradation reduces potency by 30–50% within weeks of opening a non-stabilized formulation. This is why pharmaceutical-grade retinol…
Source: realpeptides.co