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Every batch of PSPeptides GHK-Cu is independently tested at 99% purity via HPLC and mass spectrometry by a third-party laboratory
Patch test before full use, especially if you have sensitive skin or are introducing new skincare products
When administered biweekly (twice over 14 days) at 60mcg/kg, this regimen consistently raised mean GH levels, with the effect persisting by day 28 [15]
This is particularly true when copper peptides are combined with exfoliating acids or retinoids , which can compromise the skin barrier
(Source) Heres a review of several BPC-157 studies
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