I do think our hair is quite different, as a whole, from hair of other races. It isn't to say their isn't diversity within or people from other races having similar hair to ours. It's a numbers game though.
Personally I find sun screen marketing to be more absurd, yet I still get the idea. We all burn and need protection from the sun, but fair skin white people have the highest rates of skin cancer and it's even higher among people who freckle.
I tend to look at numbers and reasoning, before I jump to any sort of feelings. Just the way my brain works. As far as natural...since it started with relaxed and natural I've always assumed natural referred to the state of the hair and not the ingredients in the product. I don't think Pantene has ever aspired to be an eco brand.