Copper Peptide (GHK Cu) 2% Recovery Serum Topical or SubQ GHK Cu? Same molecule. Very different purposes. Topical you apply it on your skin. Think of it as feeding your skin from the outside. In a 12 week study of Can GHK Cu Be Taken Orally? Oral GHK Cu Bioavailability, Tablets & Copper Peptide Safety Neurogan Health Copper Peptide Regenerating Serum for Glowing Skin and Hair Ghk Dosage Guide 100mg 3ml TikTok GHK CU VIBRANCY MICRONEEDLING KIT LUX LAB