Sent GLOW, KLOW, and the TB BPC blend to a lab after 30 days refrigerated. 99.6% purity before. 99.6% purity after. Same milligram content. No measurable degradation. These blends are professionally formulated and If you've ever felt lost trying to reconstitute GHK Cu, this one's for you. I walk you through how I prep it step by step, including transferring it to a larger vial. Think of this GHK CU Peptide for Anti Aging & Skin Repair ElixerMD GHK Cu Peptide (50mg) Advanced Skin Rejuvenation & Healing Support