And the term "copper peptides" itself is doing a lot of unearned work, because it lumps together GHK-Cu (the molecule with 50 years of evidence) with AHK-Cu, GHK-NH2, and a range of synthetic copper-binding sequences that have far thinner mechanism data
BAC water is sterile water that contains 0.9% benzyl alcohol, a mild preservative
Multiple clinical and laboratory studies have linked it to increased collagen and elastin production, improved wound healing, and visible improvements in firmness and fine lines (research summarised in Briefings in Functional Genomics, 2013, and the Journal of Cosmetic Dermatology, 2015)
The solution will appear unchanged, but receptor binding affinity has dropped measurably
Emerging evidence underscores the involvement of TH signaling in various ocular pathologies, such as diabetic retinopathy