can i use ghk cu with retinol GHK-Cu Skin Protocol: Topical Copper Peptides + Routine Support (2026) Why You Shouldn't Mix GHK-Cu
Description
Copper is an essential micronutrient that supports various enzymatic functions necessary for maintaining healthy skin
[DOI] [Google Scholar] 47.Tanner E.E.L., Curreri A.M., Balkaran J.P.R., Selig-Wober N.C., Yang A.B., Kendig C., Fluhr M.P., Kim N., Mitragotri S

The answer depends on the current 503A bulk drug substances list, the compounding pharmacys sourcing and licensing, and state-level regulation

For example, if a vial of powder says add 2 mL bacteriostatic water to reconstitute, then the dose is 2 mL
