Perpetua.Life uses a liposomal delivery system, so you can tick its precursor doses up by about 25%, according to the one such study in humans.45 That still only gives you 625mg of precursors compared to the 1,100mg you get from Innerbody Labs
The agency does the final paperwork either way
The structural simplicity of GHK-Cu translates to lower manufacturing cost see Why Some Peptides Cost More Than Others: Manufacturing Complexity Explained
These were ex-vivo permeation experiments framed around anti-inflammatory delivery rather than wrinkle outcomes, so they speak to whether the molecule can reach the dermis, not to how much cosmetic change follows but even that limited, mechanism-level demonstration is one the injectable route has no equivalent of for reaching skin specifically
doi:10.1111/ijd.12999 Allen J, Bradley RD
Can GHK-Cu replace finasteride or minoxidil