I have had hyperhidrosis (excessive sweating) on my hands and feet for 20 years...so much that I try to avoid shaking hands with people, and I always wear socks even in the summer because my feet sweat profusely, and it's embarrassing to have wet stinky feet in flip flops! I have even looked into having surgery for this.
I have noticed in the month that I've been on sub that my skin is waaaayyy more dry than it ever has been. I am constantly putting lotion on my hands, and I never did that before!! That would have made it worse. And my hair has always gotten oily by night time the very same day I wash it. But since being on sub, I can go a couple days without washing my hair and it STILL doesn't even look greasy at all.
This is definitely not normal for me, and usually people would hate having dry skin, but in my case, I am enjoying it very much!! I haven't had to be emarrassed about my clammy hands and feet at all! I know this is not something "normal" people would even think about, and it sounds silly, but it's true. It has effected me most of my life and it's like these symptoms just disappeared over night since I started taking sub!