Amazon.com: Skin Perfection Copper Peptide Serum GHK CU 1% for Face & Hair Copper Peptides for Skin, Hair, & Scalp 1% Blue Liquid for Face, Neck, Body, Scalp Multi Use Serum Booster with GHK CU 100mg 99%+ Purity, COA Verified Amazon.com: Copper Peptide Hair Serum with Copper Tripeptide 1 Dual Peptide Scalp Treatment plus Licorice Root Extract : Beauty & Personal Care Does GHK Cu actually mess with other peptides or is it more about how things are formulated? From what I've been learning, most of the issues people talk about come down to Hormone Free Copper GHK+ Facial Serum with Cycloastragenol