Hydra Needle Microneedling with GHK Cu & SNAP 8 Peptide Skin Tightening Guide Miami, Beverly Hills, NYC Most people use GHK Cu way too early after microneedling and end up blunting the exact collagen signaling window theyre trying to trigger. In this video I break down the biology of why I wait around Microneedling with GHK Cu is one of the most effective ways to stimulate collagen where your skin needs it most. The reason is simple: it's targeted. Microneedling creates micro injuries on the skin, and Effective Anti Aging Peptides for Microneedling