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Description
Compatibility with other actives: GHK-Cu combines effectively with hyaluronic acid, niacinamide, ceramides and signaling peptides (Matrixyl)

PMID: 82 RatnaAMandrekarP
This is one of the most popular peptide stacks

You'll need bacteriostatic water for reconstitution: add it slowly down the wall of the vial, swirl gently, and never shake
