If you are using GHK-Cu for an injury, you might notice reduced inflammation and early signs of accelerated repair within the first week
From my testing and dialogues on recipe forums, the sweet spot is 20 to 30 minutes
If you add 2ml of bacteriostatic water to a 10mg vial, you have 5,000mcg per ml
GSH is a cofactor for dozens of enzymes involved in detoxification.* As an antioxidant, it directly quenches several reactive oxygen species (free radicals).* Numerous structures and functions in the body receive benefit from maintaining normal levels of glutathione, such as hepatic support, pulmonary health, immune function, bowel health, carbohydrate metabolism, cardiovascular health, cognitive health, and eye health.* The liver is the largest reservoir for glutathione in the body