Both compounds have their own side effect profiles
Neurotox Res 37:669682 Shen J, Xie J, Ye L, Mao J, Sun S, Chen W, Wei S, Ruan S, Wang L, Hu H (2024) Neuroprotective effect of green tea extract (-)-epigallocatechin-3-gallate in a preformed fibril-induced mouse model of Parkinsons disease
GHK-Cu is a three-amino-acid copper peptide with proven skin benefits but no injectable human data
Proper hydration at the cellular level improves skin turgor, reduces the appearance of fine lines, and creates a more radiant complexion effects you can see within hours of treatment
Critically, the attenuation of stress via FAAH inhibition does not appear to impair the ability of FAAH inhibition to facilitate extinction memory [19]