ES, I don't use the skin biology copper. I do use a copper peptide from ncn. Quite honestly, I'm not sure what it's doing.
I started a skin regimen at the same time. I'm seeing visible results - improved skin tone and even texture, more clarity, fewer spots, a plumper look to my face and reduction in some expression lines, reduced pore size.
What gets the credit? 2%BHA, 4% Foam BHA, Vit C+, Anti-oxidant Serum, Matrixyl Accelerator, Perricone Pore Refining Serum, Copper
I'm thinking some of the improvement is a synergistic effect. I don't plan on stopping anything.
Sorry, because I didn't really answer your question....