So I tried to search for this with no luck... Customizations, and allowing reader to revert to original settings

Creator's Corner Directing Help & Tips
2

I think you can do it with two methods.

1, Create another character with the MC’s original features, then write:
“Reset” {
@MC becomes MC2
}

2, Change her features one by one.
“Reset” {
@MC changes hairColor into #
etc.
}