GHK-Cu + NAD+ (or NMN/NR)
Pair two longevity compounds that work on completely separate biological layers — GHK-Cu remodeling skin/tissue collagen, NAD+ refueling mitochondrial energy and DNA-repair enzymes — so a single protocol addresses both skin/hair/wound quality and energy/cognition at once.
These two hit <b>completely different systems</b>: GHK-Cu, a copper-carrying peptide, rebuilds skin and tissue collagen, while NAD+ refuels the cell's energy and DNA-repair machinery.
