daxisgone

BAck a year ago when i'd masturbate, during the masturbation process the tip of my penis (wen you flip the foreskin down i'm uncircumsizeD) the skin there becomes very dry and like i can just rub it and the dead skin will fall off. i though it was too dry so i just put lotion and water on it and a couple days later it's gone. but lately i've been noticing it. and it only happens while i'm stroking. is this a big problem or is there somethin i can do? any help wud be great