Advanced GHK Cu Face Cream 2400mg 4% Firmer Skin Neurogan Neurogan Health Reveal Radiant, Youthful Skin with Daily Firming Serum* Turn back the clock with our luxurious Daily Firming Serum! Infused with potent botanical extracts and rejuvenating peptides like GHK Cu, this serum 12 weeks in, and my skin has NEVER looked better! GHK peptides are doing their thing. Alright, I need to give you an updateit's been 12 weeks since I started using GHK GHK Cu Sovereign Health Performance GHK Cu peptide = one of the most powerful ingredients for skin regeneration , It helps improve elasticity, smooth fine lines, and boost that natural glow., Once you start theres no going back ,