Jesus’s face is never shown in “Ben Hur”. It was what made that portrayal very special.
Perhaps you are thinking of “King of Kings” in which Jeffrey Hunter played Jesus. That one fits your description perfectly.
The scene I’m thinking of was when Judah was on the death march through the desert, and he stumbled and fell, it was Jesus who gave him a drink of water. Maybe they didn’t show his face then, but they portrayed him in clean clothing and clean hair. I usually watch it right around Easter anyway, so I’ll check it out and see if it’s what I remember.
But, the best part was when the guard came over and yelled at Jesus, and then Jesus just stood up and was face to face with the guard; the look on the guard’s face said a lot to me - the guard was stunned, recoiled, and he backed up.
To me .. that’s how I felt Jesus would have affected people who were evil. So, to portray Jesus as filthy, ragged, grubby, IT JUST DOESN’T FIT. And, I do realize that in that day personal cleanliness was not a priority - I’ve always believed Jesus would have stood out because he would have been personally clean, as well as his clothing - and would not have looked like the rest of them. Just my personal opinion.
I think I remember seeing King of Kings, but that’s where my recollection ends. Ben Hur has always been my favorite.