If you experience this pattern, consider whether it might be normal adjustment that will resolve with continued use, a sign that concentration is too high and should be reduced, or indication that copper peptides aren't suitable for your skin
How long does a bottle last
Peptides: Short chains of amino acids that help support skin firmness and improve the look of elasticity over time
These bonds act as powerful antioxidants, donating electrons to free radicals, which are then converted into other stable compounds, thus preventing the continuation of free radical chain reactions in a wide array of living organisms (Chae et al., 2022)
Additionally, EGCGs stability is affected by environmental factors like pH, temperature, and oxidative conditions, posing challenges for formulation and storage [99]