GHK Cu Injectable Team Wellcore When using peptides, the Sub Q tissue is the correct space for injection. Here is a simple guide on how to find this space. Remember to use sterile technique, please call or Uses and Benefits #ghk GHK Cu is a naturally occurring peptide in human plasma that declines with age. When used in injections (usually subcutaneous), it can offer various benefits: Skin Rejuvenation and Anti Aging: GHKCu Copper Peptide Therapy Skin & Healing Regeneration