If you've been down the GHK Cu rabbit hole, you already know. If you haven't, welcome. This is the ingredient that skincare nerds, dermatologists, and anti ageing enthusiasts have been talking about for years. GHK CU VIBRANCY MICRONEEDLING KIT LUX LAB Squalane + Copper Peptide (GHK Cu) Rapid Plumping Serum Four reasons this serum belongs in your routine. GHK Cu Peptides that firm and support collagen renewal. Barrier support to keep your skin healthy and resilient. No injection. No needles. No clinic visit.