...Of course, we have to assume they had some means for him to shave... which actually doesn't make sense, because most pure American Indian tribe men don't grow facial hair. As to why, that's a whole other subject (some speculate ancestors of an Asian migration from long ago).
Why speculate? It's not as if they're a long-lost population that died out centuries ago. Ask any living person of American Indian ancestry. I'm sure it varies by culture. They do have less body hair than other ethnicities, but they do shave.
Doug