take years off (of) (one)
To cause one to look younger. Wow, that makeover really took years off you! If I shave my beard, it will take years off of me.
take years off (of) someone or something
to make someone seem or look younger. (Of is usually retained before pronouns.) My exciting vacation took years off of me. Your shorter haircut has taken years off your face.
take ˈyears off somebody
make somebody feel or look much younger: The new hairstyle takes years off her.