His micro-plastic surgery shows that he is not confident in his appearance. At this time, all you have to do is praise him, encourage him and give him confidence.

You can tell him that this is how I like you. Even with a little flaw, you are unique in my eyes. You are what I like, and what I like is the truest you. You look good in my eyes, and I don't even mind your untidy appearance when you get up without makeup. I don't want you to do micro-plastic surgery, so don't go, okay.