neurogan health copper peptide ghk-cu Peptide, Hair & Scalp Serum, 2 oz (60 ml) Neurogan GHK- Cu Copper Peptide
Description
Age can affect how well the body absorbs and uses vitamin B12

Tissue Regeneration: This remarkable peptide supports tissue regeneration by upregulating the expression of growth hormone receptors in various cell types, including those found in tendons, muscles, ligaments, bones, and the gastrointestinal tract [2]

For how bioregulators fit into the hallmarks of aging framework, see The Hallmarks of Aging: Which Peptides Target Which
Knowing the differences between these two can really affect how well your treatment works