youthenize

verb2

1. •
   To make (something) more appealing or relatable to young people

   • I answered, "Actually, we have been trying to 'youth-enize' our club." — 1999
2. •
   To make youthful or younger; rejuvenate

   • Remember that your appearance is an expression of who you are. Do not try to “youthenize” your appearance for your younger clients. Stick with your authentic self. — 2015