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After your skin has adjusted to the initial concentration without any adverse reactions, you can consider gradually moving to products with a higher concentration of GHK-Cu if you feel your skin can tolerate it
They act on gut-hormone pathways that regulate appetite, gastric emptying, blood sugar, and energy balance
Can help moisturise and protect the skin from free radicals
Circulation 138 , 28842894 (2018)
These are compounded medications and are not FDA-approved
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