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Description
Its important to understand the research behind each peptide if youre selecting between AHK-Cu and GHK-Cu so you can make an informed decision.

The compound is a synthetic pentadecapeptide originally identified through analysis of naturally occurring gastric peptides

The type of anemia associated with B12 deficiency is known as pernicious anemia and occurs when the vitamin cannot be absorbed from the digestive tract into the bloodstream in adequate amounts

The peptide GHK (glycyl-L-histidyl-L-lysine)...

It brightens the skin and helps with hyperpigmentation and uneven skin tone
