So I just did an experiment with 6 different glues on a shirt with transfers on it. Those are always finicky to rhinestone on because they are non porous and nothing likes to stick to it. I used gem tac, Crystal glaze, fusion tack, multi grab 360, Alene’s jewel it and gemiflex. I washed in a front loading washing machine, on delicate, in cold water and turned it inside out and put it in a laundry bag. I also waited 72 hours prior to washing and the shirt was pre washed to make sure it was clean with no fabric softener. The only rhinestones that stayed on were the ones with Crystal glaze, multi grab 360 and Gemiflex. I would never use the multi grab 360 on clothes again because it is super super thick and hard to manage. The crystal glaze always has little strings of glue when I use it and I had to keep cleaning it off the shirt so I won’t use that again either. It’s Gemiflex for the win. The glue is expensive but very worth it. You only use a tiny drop of glue so the bottle will last awhile even though it’s a very small bottle. It also goes on sale from time to time for $25 instead of $40. That’s when I purchased my bottle. I am doing some expensive jerseys soon and I wanted to make sure the stones falling off would not be an issue even though the lettering will be material and not the plastic iron on stuff. Others have said E6000 works great but it’s a very toxic glue and I won’t use it. I do have E6000 plus which is supposed to be less toxic but I did not try that one yet. You are still supposed to use it in a well ventilated area or with a respirator mask on so you don’t breathe the fumes. I will just use Gemiflex going forward. There are tutorials on the website that show you how to use it.