GHK Cu is one of my personal favorites for a lot of reasons, but I can say without a doubt that it's use effectively stopped and reversed, my receiving hairline. However, there are GHK Cu (Copper Peptide) isn't just another trend. It's a naturally occurring peptide in our bodies that plays a vital role in healing, collagen production, skin regeneration, and even hair support. Here's all : . Dr. Shintre breaks down what it is and why it works. ? A copper based peptide that naturally occurs in your A Dermatologist's Take on the Copper Peptide (GHK Cu) Trend