For
Both promote the idea that one skin tone is better than another.
Against
They are just personal beauty preferences.
Anonymous excerpts, translated where noted.
“When you frame it like that I'd say both are pretty problematic and "unnatural"”
“American culture DEFINITELY pushes tanning as a beauty standard and it is definitely problematic.”
“No one is going to put down a good looking person no matter their skin tone.”
“skin-whitening products have been shown to be harmful, while sunless tanning products have not.”