ghk-cu dosing research Does Really Work? 40 Years of Reviewed GHK-Cu Dosage: Clinical Guidance for

The studies opened new insights, not least the equal importance of IGF-I and IGF-II in fetal growth, reducing birth weight by about 60% in both Igf1 knock-out ( Igf1 ko) and Igf2 ko animals and demonstrating that the previous perceived concept that there was a fetal (IGF-II) and a postnatal (IGF-I) form of IGF was incorrect

Ingredients like GHK-Cu and peptides are pro-collagen actives because they signal or support the skin's biological collagen synthesis pathway.

They signal actively when GTP is bound and signaling terminates when their intrinsic GTPase converts GTP to GDP

Skin Pharmacology and Physiology 25(3):141-151. [doi.org]

Wiedmann, T

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