According to the US census the black population in
1900 was 11.6 %
1930 was 9.7 %
1960 was 10.5 %
1990 was 12.1 %
2020 was 13.4 %
A couple of percentage points either way. The white population has been mostly displaced by Asian and Hispanics immigration and larger families. As you have probably heard there is a big push for the nascent Hispanic vote.
I suspect with the Internet you can get any kind of cosmetic supplies that you desire. At Sephora I saw shades of makeup for all skin tones.