For a while now, I have observed pubic hair around/near my lower scrotum/testicles to be reddish brown color and have a sort of build up on it, a build up that I can actually peel off. I tried to shave away the pubic hair, but more grew back, and the build up was still on the new hair. It's not a thick build up or anything, it just covers the hair. It isn't on my skin at all either, and it's only in my lower regions of the scrotum around where my legs touch my testicles and lower. I've read other comments of people who have the same problem, and I've read that it's due to sweating. Is that true? My newest way I believe to get rid of it is to wash it very well, shave the area, then use powder (I got baby powder) to keep from sweating. I have noticed sweating, and believe that could be the cause. Please help me, this has been bothering me for a while. I'm pretty sure it's not an STD. Help