ghk-cu for skin tightening Dosage and Protocol: A Medical Provider's Guide to the 30-Day Cycle including sensitive skin InfiniWell GHK-CU Peptide Serum -
Description
In other words, it will vary depending on the individual

Weeks 812 : peak reported effect in community-use cycles

Age Studies show that people who are over the age of 50 may struggle to store vitamin B12 due to a decrease in the production of stomach acid and inflammation of the stomach

long-term use can cause significant adverse effects including kidney problems, hypertension, and non-melanoma skin cancers (Paul 2003
