I stuck my balls in powdered caffeine and now they're itchy!!

GUYS HELP, Okay, so like, i kinda stuck my balls in a thing of powdered caffeine as a "science" experiment. It was great. Best time of my life. But now it's been 2 days and im still getting the powder from between my wrinkles! It burns and is making my skin very very itchy, like what if i scratch my balls so hard that i bust them open!! Like im so scared, and like my balls are still tingling, it feels good but the itchiness of my balls cancels out the good part of this science experiment.... What the hell do i do!?!?!?