Subcutaneous Injection: What It Is and How to Give One Before vs. after 3 months of GHK Cu peptide therapy smoother texture, more even tone, and skin that looks healthier overall. Small peptide, big difference GHK Cu Side Effects, Complications, and Risk Profile GHK Cu for Skin Rejuvenation WeCare Pharmacy GHK Cu Injections in Napa & Sonoma THE POWER COMBO: GHK CU + BPC 157 = NEXT LEVEL RESULTS Here's where peptide therapy gets really interesting. GHK CU builds collagen. BPC 157 accelerates healing. But when you combine them? You get exponential results.