GHK Cu Amino Supply GHK CU Topical Cream NEXTDRIP GHK CU OLYMPEX SOLUTIONS A Dermatologist's Take on the Copper Peptide (GHK Cu) Trend Im always transparent about my skin struggles and try to be vulnerable to show my clients the real deal. Recently (in the past year) Ive started struggling with rosacea. I decided to give this Rosacea isn't just about rednessit's often a sign of a compromised skin barrier and ongoing inflammation. When the barrier is weakened, skin becomes more reactive: Increased sensitivity Higher transepidermal water