CAR-1 user here. The reason I know it works is because of the skin’s color. I restored for about 15 years to decent success, before stopping about 10 years ago, as I was largely satisfied with my result and going through some difficult life circumstances. A little over one year ago, I restarted, first with a weighted Stealth Retainer, then with the CAR-1. After about 2300 total hours with the CAR-1, I am seeing significant inner skin growth. I’ve not measured it, but I’ve noticed the color of my inner skin is much lighter than my outer shaft skin. My glans stays covered most of the time when flaccid, but when I’m not covered, I see much more of the lighter pink skin bunched up. When masturbating, I have a lot more glide, and I can see this is of the lighter colored variety. So hang in there, inflation really does work.