Sanendi Dermapen Serum NAD+Facial Serum Collagen Glutathione Hydrating Firming Skin Booster 10Vials*Box GHK Cu Pinnacle Performance Labs Lyophilisation Process Explained Imperial Peptides UK If your GHK injection site gets irritated try this , 1. Dilute it by adding more water to the syringe , 2. Let it sit until it reaches room temperature , Also, make sure youre rotating injection Longevity Support: Bioavailable NAD+ and Glutathione Sunny Within