Proper refrigeration provides the full, recommended shelf life without introducing the catastrophic variable of non-homogenous mixing
If using both, apply them at different times for example, vitamin C in the morning and GHK-Cu at night or use separate treatment days
Concentrations above 4% have not demonstrated proportionally greater benefits in published literature
Many people will also experience cognitive difficulties such as problems with vision, memory, thinking, or reasoning, the development of mental illnesses such as depression, or general changes in behavior
Researchers should define the main question before selecting a model: whether the study is testing cytoprotection, migration, proliferation-associated endpoints, angiogenesis, extracellular matrix remodeling, endothelial signaling, or tissue-level recovery