^
This video answers a question I've been wondering about for about 10 years. She developed crows feet around her eyes in her early 30s, but they disappeared about 2010. I always wondered what kind of procedure did the trick. She didn't have the stretched look of eye lifts and she didn't have the puffy look of filler injections like collagen. Her face looked perfectly natural, like the wrinkles had never been there. Whoever her doctor is, he or she is very skilled.
Now she's in her mid-forties and still has no visible wrinkles anywhere. But you can see in this video that she does now have the puffy look that comes from injections (but still looks great, IMHO). So, that's what she's been doing. Probably gets more every few months or years depending on what kind of injections she's getting.
I wonder: When the other OG Momusu ask for her doctor's name, does Yuko tell?