is 4.5 mg ghk-cu too much Peptide Dosage: Complete Guide for Skin, Hair, and Healing Goals GHK-CU vial dosage question :

Application technique: Dispense a few drops and apply to areas of thinning, usually the temples, crown, or hairline

doi:10.1016/s0304-4165(01)00127-1

A small copper-binding peptide (Copper Tripeptide-1), naturally present in human plasma which has proven to stimulate hair growth, seal the brittle hair in several ways

Chichester, UK: John Wiley & Sons, Ltd

It is thought that the elevation of homocysteine levels might be partly due to vitamin B 12 deficiency in individuals over 60 years of age

This is why newborn babies in the UK routinely receive vitamin K supplementation at birth, as they have low stores and limited ability to produce it naturally