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In our guide to the best copper peptide serums, well break down the science behind this popular ingredient and give you all the details on our top picks to help you choose the right serum for your unique needs
Can I use GHK-Cu with retinol or Vitamin C
When collagen is broken down (for instance during injury), GHK is released and can bind copper
FDA therefore says it lacks enough information to know whether such products would harm humans
Combination Approaches Some users employ both delivery methods, using injectable GHK-Cu for systemic effects while applying topical formulations to specific areas of concern
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