"Please stop whitewashing. His natural skin makes him look more handsome." 1. (너무) 희게 보이게만 하지 마세요. 그 사람의/걔의 원래 피부가 더 멋져 보여요. ('그 사람' if he's an adult, 걔 otherwise) 2. (너무) 하햫게만 보이도록 하지 말아 주세요. X 씨의 자연스러운 피부 색이 더 보기 좋아요. ('X' being the person's first name)

I think she/he is talking about the netizens that is making an celebrity look more pale. (i'm sorry if there's anything wrong)

Hi! Would love to help, but could you tell me more about the situation? Particularly, who the audience is, and who is doing the whitewashing. And perhaps tell me how as well. Is it a real person who is constantly getting photoshopped or applied makeup, a fictional POC character getting played by a white person, an animated character being drawn that way, etc.