Copper Peptide Hair Growth Serum for Hair Loss & Thinning Hair Feline Skinscience GHK Peptide Hair Growth Clinical Trial (2016) Research Summary Hairgenetix : . Dr. Shintre breaks down what it is and why it works. ? A copper based peptide that naturally occurs in your Hair Growth Serum Intense with Copper Peptide GHK Cu GHK Cu for hair growth does it actually work? Short answer: no. GHK Cu can be great for skin but when it comes to hair growth, the evidence just isn't there. And this Thermodynamically stable ionic liquid microemulsions pioneer pathways for topical delivery and peptide application ScienceDirect