glutathione is vitamin Glutathione: a powerful antioxidant for a healthy skin Glutathione Supplement — Reduced L-Glutathione
Description
Individuals who wish to attain the most benefit from coffee polyphenols should consume coffee specially prepared to ensure that chlorogenic acid is retained during the roasting process

This indicates that an excellent starting point for mixture would be 1.5 drops per 15mL of a GHK-Cu free product (which would result in a topical containing .03% GHK-Cu)
People with Chronic Medical Conditions Those with liver disease, asthma, or autoimmune conditions should consult a healthcare professional before use

Neuron 87 , 576589 (2015)
