I'm half First Nations, half white. I got my biological father's hair and eyes, and my mother's pale skin. Or, as a dermatologist described it, "Celtic" skin. My entire life, my arms have had red bumps on them. I'd exfoliate myself raw, and couldn't ever figure out a way to make my skin smoother.
Then in 2010, I had issues with MRSA. As part of my treatment for that, I started using a cleanser called "Hibiclens".
It doesn't look like much, and it smells really antiseptic. But after the first use, my skin is much less red and irritated and bumpy. I keep it in the shower, and switch off between soaping up with it or my Dove.
Chlorhexidine. It's just one of those miracle drugs, I guess.