Upregulated: collagen, elastin, stem cell activation, DNA repair, and antioxidant genes Downregulated: inflammation, tissue breakdown, and cellular aging pathways In a landmark 2018 study, fibroblasts treated with GHK-Cu showed genetic signatures identical to younger cells with increased DNA repair enzymes, normalized oxidative stress markers, and restored mitochondrial function
Bottom line Peptides are one of the more interesting developments in hair loss treatment in 2026
In brief, DNA fragments were end-repaired, extended with an A base on the 3 end, ligated with paired-end adaptors with the Bravo Platform (Agilent Technologies) and amplified to generate libraries (10 cycles)
This can be risky for patients, as unapproved versions do not undergo FDAs review for safety, effectiveness and quality before they are marketed