A couple of things that counted as "technically cosmetic":

- Removal of a skin tag (though my doctor managed to fiddle it through as "causing me discomfort" so I got it NHS'd)

- Crowns, because I broke my front teeth falling off my bike. I spent a good number of years putting up with it (because expensive, and because "eh, that would be vain and stuff") but eventually got fed up of not daring to smile properly because I'm self conscious of looking hideous, and got them done.

But no, no nip and tuck for me. Never ever. I've seen some of those horrors.