Josh Groban -- Good Genes Or Good Docs?!

Josh Groban's looks over the years are simply harmonious!

Here is a 21-year-old version of the multi-Grammy Award-winning musician serving up a fresh and young look at the Beverly Hilton Hotel in Los Angeles back in 2002 (left). This was just a year before debuting one of his biggest hits "You Raise Me Up."

And, 20 years later ... the singer turned actor is still rockin' his wavy locks and recently attended the 2022 Young Arts New York Gala at The Metropolitan Museum in New York City (right).

Mr. Groban has kept his curls intact!

The question is ...