I've been postponing using this pep for a little while. I did glow for 6 weeks and definitely noticed results, mainly nail growth. At that time I did 1.5mg (GHK-Cu ). Took a 4 week break and decided to start GHK-Cu. Someone posted a brilliant idea to dilute the vial with a couple mL of BAC and then transfer that into the 10mL vial of BAC they originally used to mix GHK-Cu with. I'm stoked because it literally was the easiest thing to do and when I did my first pin last night I was bracing for that sting. Absolutely no bite! I let the syringe get to room temp first as a precaution. Slight itching for about an hour afterwards but no welt. No sting. Nothing other than a tiny itch. Thank you to whomever suggested using the 10mL vial of BAC to put it all into. 🙏 Funny thing is that I bought a couple extra empty 10mL vials just to transfer to. Kinda a waste of money because all you need is a new 10mL BAC and you're golden.