Avoid GHK-Cu if you have Wilsons disease (due to the risk of copper accumulation), an active or history of certain cancers (due to growth factor effects and angiogenesis promotion), are pregnant or breastfeeding (safety not definitively established), or have known copper metabolism disorders or peptide allergies
Differential regulation of glutathione S-transferases in cultured hepatocytes [PMID: 2912828] Laboratory literature summary: Differential regulation of glutathione S-transferases in cultured hepatocytes
The deepest gap of all leads back to Sikiri himself
Heres a few other face friendly carrier oils you could use with or instead of jojoba oil: Argan oil = my recommendation for anyone with oily or breakout prone skin , absorbs very fast, lightweight, non-comedogenic, and rich in Vitamin E Rosehip Oil = my personal favorite, I tend to do half jojoba oil and half rosehip seed oil in my homemade face serums since its rich in omegas + antioxidants , very restorative Pomegranate Seed Oil = my choice for dry, aging or mature skin , rich in fatty acids, moisturizing, you can blend this with jojoba and/or rosehip for a rich does-it-all blend
Atkuri KR et al