they should match very closely
FFS, you are using a skin care product that is acidic with a low pH, of course you will experience the above
That means that the molecules are designed to combine with body fluids and absorb through the mucous membranes of the body (mouth and digestive tract), instead of relying on absorption through the gut (which is no good)
Convenient liquid formula for easy daily use and fast consumption
Brighten Up 25% Vitamin C + Glutathione Clinical Serum This clinical-level serum features highly stable 25% vitamin C to visibly improve uneven tone, radiance, elasticity & firmness without irritation
Therefore, it is impossible to determine if IN GHK-Cu actually restored the aged hippocampus to a youthful transcriptomic state, or if it pushed the tissue into a novel, alternative compensatory state that simply happens to function better