Most people use GHK Cu way too early after microneedling and end up blunting the exact collagen signaling window they're trying to trigger. In this video I break down the biology of why I Most people use GHK Cu way too early after microneedling and end up blunting the exact collagen signaling window they're trying to trigger. In this video I break down the biology of why I NL GHK Cu (TETRAPEPTIDE + CU) Synthagen Synthagen PL GHK Cu Dosage for Hair Growth and Skin Rejuvenation Frontiers Exploring the beneficial effects of GHK Cu on an experimental model of colitis and the underlying mechanisms