Multi Peptide Formulations in Research: GLOW vs. KLOW Peptide Blends Klow Blend Advanced Regeneration, Recovery & Skin Repair Complex 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 You may hear us talk about GLOW and KLOW and wonder what the difference actually is. Here is the simple version. GLOW is our foundational regenerative peptide blend. It focuses on cellular Glow Peptide Protocol GHK Cu, BPC 157, TB 500 Neurogan Health