What are your thoughts on peptides like GHK CU and BPC 157 (those not FDA approved) I am seeing providers offer them and do see that they can be helpful but if they aren't A GHK Cu face serum appears blue because the active ingredient, GHK Cu (copper peptide), is naturally a blue colored powder, meaning its inherent color transfers to the serum when mixed in; this blue hue FDA Peptide Reclassification 2026 Amanecia Health GHK Cu Copper Peptide Shampoo Anti Hair Loss Shampoo Promotes New Peptide Labz Cellular Glow Copper Peptide GHK Cu Serum for Face The Peptide Craze Ground Truths