Aetheryte

[Grayve]

There was a lore panel where Koji stated all the Scions used magiks to appear younger.

[Keever]

There was a lore panel where Koji stated all the Scions used magiks to appear younger.

No, there wasn't <_<

There was one brief encounter years ago where he was asked how the Scions stay looking so good and he somewhat off-the-cuff jokingly said "Sharlayan cosmetics!"

That's it.

[Enkidoh]

No, there wasn't <_<

There was one brief encounter years ago where he was asked how the Scions stay looking so good and he somewhat off-the-cuff jokingly said "Sharlayan cosmetics!"

That's it.

Indeed, also I think there is a bit of confusion here with a reply Ferne actually made during the first Fanfest (at the Lore Panel) where it was asked how Kan-E-Senna looked older than the other padjal, and that was the answer given (she uses magic glamour to appear older as she believed the other citystates would not take her seriously as the head of state of Gridania if she looked like a child) has a similar context to the apparent age-defying properties of the Archons.

So yeah, I don't believe it was ever confirmed the Archons were using glamour magic to keep themselves looking younger than they were, only Kan-E-Senna.

[Keever]

a reply Ferne actually made during the first Fanfest

Of Kan-E-Senna, Ferne only says she is "making herself up" (video here) to look older. No explicit mention of magic here either. Could just be cosmetics.

[ObsidianFire]

Y'shtola's lore book entry specifically says that "The hand of time ever stopped on twenty and three" in regards to her age and doesn't say how old she actually is. Given how good Y'shtola is with magic, I could see that being the case.

[Keever]

Y'shtola

Y'shtola's insistence that she is twenty-three is a joke previously used in the description of her ARR minion:

If we are to take her word for it, the Circle of Knowing Archon has seen but twenty-three summers.

There may or may not be anything to read into there. I tend to assume it's just another case of devs/writers joking around in the absence of stronger evidence. Just like "Sharlayan cosmetics".