ghk cu hair growth evidence ghk-cu peptide regrowth AHK-Cu + GHK-Cu Hair Serum Pro 4800mg GHK-Cu for Hair Growth: Protocols
Description
This is especially the case when they first start them or change the dose

PMCID: PMC12693348

Correia, G., & Magina, S

Recommendation: Test b12, but do not wait for results to make changes
