6 month GHK CU check in Main takeaway: skin transformation takes time. GHK CU peptide binds to copper and activates genes involved in wound healing, collagen synthesis, and skin remodeling. On the face, this translates GHK Cu has been studied for decades. Clinical research shows it supports firmer, tighter looking skin, improves overall texture, and helps bring your skin back to a more youthful state., Even better? GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B Subcutaneous Injection: What It Is and How to Give One