GHK Cu Copper Peptide Neck & Face Serum Dealing with rosacea can feel like nothing really works , Until you make your own GHK Cu serum, ideally with Matrixyl, and your skin finally starts to recover Scantifix Facebook 2% GHK Cu Restorative Skin Cell Serum Copper Peptide Serum Vitali Skincare 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