ahk-cu reddit GHK Cu party tested and 99% purity confirmed by in GHK-Cu vs AHK-Cu: Which Copper
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A reader is best served by holding two things at once: the mechanism is genuinely interesting, and the human evidence does not yet exist

But they are animal and cell work

Copper peptides have an affinity to skin cells and have been used to support healthy collagen production, skin elasticity, and the natural wound healing process

(2021), published in the Journal of Pharmaceutical and Biomedical Analysis

AHK-Cu and GHK-cu are copper peptides used as active ingredients in hair and skincare products

Some research framings use a 5-days-on / 2-off pattern to build in a weekly break
