GHK Cu vs NAD+: Which Longevity Peptide Should You Take or Stack? 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 50mg Copper Peptide at 5000 piece Peptides for skin in Panipat ID: 2854902315133 About 3 weeks in with this serumNAD+ and GHK Cu are doing their thing. She's a keeper. Want the details? Just ask. #peptidetherapy #peptideskincare #ellievateskin #GHKCu #NADplus #biohackinglongevity Two power players. Very different roles. Let's talk NAD+ vs. GHK Cu NAD+ works behind the scenessupporting cellular energy, metabolic function, brain clarity, and overall longevity. Think internal optimization, from the inside