Glow Peptide Injection: Revolutionizing Skin Rejuvenation Hubmed In Vitro and in Vivo Studies of pH Sensitive GHK Cu Incorporated Polyaspartic and Polyacrylic Acid Superabsorbent Polymer ACS Omega Subcutaneous Injection Sites and Instructions for Safe Self Administration 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 Subcutaneous Injection Sites and Instructions for Safe Self Administration