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These positive effects decline with age because the concentration of GHK-Cu in the body decreases

While the concentration of GHK-Cu may be slightly lower, the added moisture and skin barrier support can boost overall results, especially in dry or mature skin

And it plays a key role in maintaining the health of the bodily tissues

For most peptide reconstitution, bacteriostatic water is the right choice but the best answer depends on how quickly you plan to use the vial and whether the specific peptide has any known sensitivity to benzyl alcohol

Benzyl alcohol acts as a preservative by inhibiting the growth of certain bacteria and microorganisms, thereby supporting stability during short-term laboratory use