can i inject ghk-cu once a week GHK-Cu - Peptide for Collagen,

It also stimulates collagen and elastin synthesis through fibroblast activation, and its copper-chelating properties contribute to antioxidant defense by modulating copper-dependent superoxide dismutase activity

Some debate about copper-ascorbate interactions

Look for synergistic actives like DHT blockers (saw palmetto, pumpkin seed oil), biotin, niacinamide, and botanical antioxidants

Given the coupling between copper and energy status (e.g copper is a cofactor at Complex IV of the ETC) and how intensely metabolically active neurons are, it seems like short-term IP GHK-cu in the brain is acting analogously to the copper ionophore elesclomol in Tregs