Due to my job I go away for months at a time, and then am home for months at a time. I do the GHK-Cu when home, and don't bring it to work. So 50/50 cycle, 3 mo's on, 3 mo's off.
I've mentioned in other threads, I'm surprised at how effective the GHK-Cu is; both the feel of the skin, and the appearance. That said, I am using a .2mm micro needle roller and GHK-Cu topical as well, and skin scrub, 2-3x a week. So not sure which is causing the results I see.
The bending of the 8mm pen needles definitely has to be from the injectable, though. I'm not applying the topical where I do my pinning. Just the other day, I put a new needle on the pen, pinched an inch, and stabbed. And the needle just folded over. BD Easy Touch, a good name-brand. First use. Hadn't been stabbed thru a rubber stopper or anything. This is new, never happened when I first started GHK-Cu.
Admittedly, part of it has to be my clumsy, poor technique. But that can't be all of it. Skin resiliency has to be changing too.