ghk cu dry skin PSA] Albeit rare Copper peptide "uglies" are real and scary. Case report and looking for advices : r/SkincareAddiction GHK-Cu Peptide Serum 30g -

296 , E1003E1012 (2009)

It also has significant antioxidant effects and has been shown to inhibit carcinogenic receptor expression, which has led to research into its potential anti-tumor effects in breast and colorectal cancer [5, 6]

GHK-Cu has a molecular weight of approximately 341 Da as the free tripeptide (before copper coordination), which puts it near but not comfortably below that threshold

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GHK-Cu is generally stable but can potentially be deactivated or cause irritation when combined with certain strong acids (like high concentrations of AHAs or BHAs, particularly Ascorbic Acid/Vitamin C in low pH formulations) and some direct acids (like L-Ascorbic Acid)

Endoplasmic reticulum stress promotes prostate cancer cells to release exosome and up-regulate PD-L1 expression via PI3K/Akt signaling pathway in macrophages