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Clin Ophthalmol 2:879889
GHK-Cu is generally well tolerated
A Certificate of Analysis (COA) is a document produced by an independent or in-house analytical laboratory verifying a compounds identity, purity, and concentration using methods like HPLC, LC-MS, or NMR
If you notice severe irritation, or damage to your skin barrier, stop using it and ask a dermatology expert to tailor a skincare routine to soothe your skin and restore it to a natural, balanced state
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