Board Thread:Show-Related Questions and Answers/@comment-38100209-20190113010055/@comment-26967699-20190113022145

Not-aging ,or rather, not showing it, is not the same as immortality.

Not-aging simply means a being which does not show their aging process. This includes fairies, Pinocchio, Gothel, Fendrake, Regina, Seraphina, inhabitants of Neverland, victims of the Dark Curse etc.

Immortality in OUAT, however, means a being which is very hard to kill with only certain weopons. Like the dagger for the Dark Ones, and Olympian Crystal for deities (and probably for also Dark Ones). They also have the ability of unaging.

I doubt it's hard for magical people to magic themselves to look young, as lots of people used it.