Here is how plastic surgery is going to work: First there will be a scale, 1-10. 1 being very little plastic surgery, and 10 being "barely recognisable". Then, using my completely unqualified position as a KPop fan, I will do my best to provide proof using pre-debut pictures and the like. Okay? Here we go with our golden terms!
Terms
Natural Beauty: No plastic surgery, just because some of these guys and gals have had cosmetic surgery doesn't mean they're any less beautiful!
Double-Eyelids: If you're of western descent, look in the mirror, does your eyelid have a crease in it? Congrats! You have double-eyelids! Many KPop idols get double-eyelid surgery on their mono-lids in order to make their eyes "bigger". Now, note, Caucasian and Mongoloid double-eyelids are very different! So when idols are getting double-eyelid surgery, it's not to look like Caucasians! (Also note that double-eyelids can be natural in people of Mongoloid heritage, it's just exceedingly rare)
Double-Eyelid Surgery: This procedure can be pretty obvious as it leaves a permanent line on the eyelids. Now natural double-eyelids, when closed, there is no mark.
Corner Cutting Surgery: This is where someone gets the corners of their eyes cut slightly to widen their eyes. I'm not going to provide pictures because they're relatively gruesome, but I'll definitely be covering some idols who've had it done. There is little evidence left behind by this surgery, but it can be pretty obvious against their pre-debut photos.
Rhinoplasty: The big KPop villain! Nose jobs! And, no, their make-up isn't going to make that cute bump on their nose disappear. That's called surgery. Same with nostrils and nose tips, they don't change that much with age (especially when they get smaller suddenly), so yes, also surgery.
Jaw Shaving: This is when an idol literally gets the bone of their jaw shaved to achieve a different look. The poster child for this surgery (and nearly every other typical KPop surgery) is G-Dragon. These pictures actually also clearly emphasis his other surgeries as well. Another of which we'll be getting to shortly.
Chin Implants: It's just as obvious as it sounds, friends. That's when an idol literally gets silicone (or other substances) injected into their chin to appear different. Like in GD's picture linked above, he once had a nice strong flat chin that magically became pointed. There's a gif that even shows it moving because chin implants are just like boob implants, they're additions and they move!
Aegyo Sal: This is when idols implant fat underneath your lower lids! //vomits// They do this so they can appear younger, but it usually leaves their eyes looking a a little off. Most everyone has some sort of fatty deposit underneath the eyes and it just goes away with age.
There are plenty other procedures that idols can undertake, but these are the most common! If another procedure pops up during one of my analysis I'll definitely go into detail about it. Happy KPopping!
xoxo, Momma Love