You shouln't base your assumptions over a certain idol having it on a photo from a magazine or the teasers the company have released. Even with make-up you look really different (and if you don't believe that it can't change your face so much, look for halloween pictures)
In a picture from Ice Cream (Hyuna) her nose has practically disappeared due to photoshop (compare the MV to the concept photo) and in a magazine Gayoon has two arms.
If you say they have, show proof with various photos with a face without make-up (or a bit).
Also I have nothing against it, it's like putting make-up on without being able to take it off and this people do it because of the pressure of society. Bom probably got it done because of the hate she got and sometimes even their own company forces the idols.
