As an individual, it's not really possible to treat everyone equally.
Do you treat people unequally if you know they are smarter? What if someone else told you they were smart? If they have a high IQ, would that matter to you? Based on which college they graduated from? If they work 16 hours a week? What about 16 hours a day?
Attractiveness is an indicator just like any other [1]. It's just a reality.
Well, if I know they have a high IQ I might infer that they have strong mental faculties, are able to cope well with complex problems, etc. If they graduated from a good University, I might infer that they are intelligent and have a reasonable work ethic. If they work a great many hours, I may infer that they are motivated, or perhaps passionate about their job. I do not think that I can fairly infer similar things from attractiveness even if a correlation exists. There exist beautiful idiots, but essentially no idiots graduate from Cambridge or score 140 on an IQ test.
Most attractive people I've met put no work at all into diet or exercise or makeup. I will admit that makeup can have some effect though. It can turn a 6.0 into a 6.3, but it's really only good for a few tenths of a point at best. Diet and exercise won't give you giant doll eyes or a smaller or rounder or flatter face. It won't change the shape of your head. A taste for fashion? hahahahahahahhaha ha
Do you treat people unequally if you know they are smarter? What if someone else told you they were smart? If they have a high IQ, would that matter to you? Based on which college they graduated from? If they work 16 hours a week? What about 16 hours a day?
Attractiveness is an indicator just like any other [1]. It's just a reality.
[1] https://personal.lse.ac.uk/Kanazawa/pdfs/I2011.pdf