GHK Cu Peptide Before and After Results 2% GHK CU Copper Peptide Serum for Hair Growth and Scalp Care Restoracell with Copper Peptides, a Great Partner for Microneedling Vitali Skincare Turn back time without filters. GHK Cu Copper Peptides help smooth fine lines, boost collagen, and bring back that healthy, youthful glow. Before vs. after 3 months of GHK Cu peptide therapy smoother texture, more even tone, and skin that looks healthier overall. Small peptide, big difference