How long will a 50 mg supply of GHKCu last when dosing 2 mg daily for five consecutive days followed by two days off each week? Amazon.com: GHK Cu Copper Peptide Supplement, Anti aging and revitalizing skin, strengthening hair roots: Precision nutrition capsules improve skin elasticity and increase hair density, 90 vegan capsules. : Health & Household GHK CU 50 mg LIVV Amazon.com: Skin Perfection Copper Peptide Serum GHK CU 1% for Face & Hair Copper Peptides for Skin, Hair, & Scalp 1% Blue Liquid for Face, Neck, Body, Scalp Multi Use Serum Booster with GHK CU VIBRANCY MICRONEEDLING KIT LUX LAB GHK CU (InfiniWell)