Unlike topical skincare, which works on the surface, oral supplementation interacts with internal biological systems
penetration-enhanced preparations (including palmitoylated versions such as Pal-GHK) are needed for meaningful dermal delivery Injectable advantages: bypasses the skin barrier entirely, delivers GHK-Cu systemically, and can be combined in the same protocol as BPC-157 and TB-500 for comprehensive wound care The distinction between topical and injectable GHK-Cu is clinically important and is not simply a matter of convenience
This article explores its mechanism, benefits, safety, and comparisons with other fat-loss peptides
So rather than asking NAC or Glutathione, the smarter question is: Whats your goal, fast defense or foundational repair
Makino ET, Huang PC, Emmerich T, Jiang LI, Mehta RC