A prominent Saturn is supposed to age well. They may look much older or younger than they are while young but around 30-ish they seem to age a lot slower. I hope that's true. I have Saturn conjunct MC in Cap.
Spot on. Having a prominent Saturn (to the AC) does either speed up or slow time for the native's looks but after they finish their Saturn's return (around 29/30) time seems to cease from that point.
In the myth, Saturn was the youngest Titan but also the most ambitious and he was the only one brave enough to rebel against his father. He was "old" on the inside, but physically, he was strong, sturdy, youthful, and handsome.
My dad has Scorpio Saturn oppose AC and as eerie as it seems... he's nearly 60 and he still look like he was in his 30s. He doesn't dye his hair but he hasn't gone grey. When my dad was in his 20s, he was super serious, hardly joked with anyone except my mother, and pretty much couldn't stand most people. He still acts like a father to me (of course, that doesn't ever seem to go away) without the bossiness but it's obvious he aged in reverse. He's more fun now as an old coot than he was when he was young. He takes really long vacations now and he NEVER thought about relaxing when he was younger. He uses text talk while texting with me (pretty hip). Even I don't use text talk but my dad does?! I guess that's the magic of Saturn. He's going through his 2nd Saturn's return now. Very interesting for me to observe my pops.
I have Libra Saturn on my AC, but also Jupiter is there as well. I've always looked younger than my age... even though my abilities can be ahead of the curve. I've survived my 1st Saturn's return and looking and comparing my pictures from my mid 20s and now, I actually look younger now than back then. People say I act young and have a "youthful" but solid energy which can be confusing. I look young, act young, but say things that someone who's been around for a while would say. I'm more solid now than I've ever been, even though I'm more "stressed" out now... Saturn hasn't destroyed my looks but seem to have enhanced it (so I think). I know more, done more, gone through more- mostly realistic scary stuff that I thought would turn my whole head grey but no, Saturn's only killed off a lot of my youthful delusions and threw out some childish habits but not the looks.
There are some old high school classmates that I got in touch with that all have Libra Jupiter-Saturn aspecting their AC (in some way). I hardly recognized them and shocked that they've drastically aged. They, in turn, are freaked out that I didn't age at all. Saturn can be extreme.
Wait until you've gone through your 1st Saturn's return and see what happens. By then, you've gone through some rough tides and will see for yourself how well you fared.