The Peptide Craze Ground Truths Time for a little GHK CU update for the people who are interested. Its day 9. I took a little break on day 5 just so my body didnt get too used to the peptides and Ill just keep going in this 5 Cu GHK vs Tretinoin: The Anti Aging Showdown Copper peptides explained what are the differences between copper peptides and GHK CU peptides? What they actually do for the skin in terms of repair and collagen, and what you can and cant mix Copper Peptides Before and After: Visible Skin Improvements Explained Hubmed People are turning themselves into lab rats': the injectable peptides craze sweeping the US Well actually The Guardian