That isn't hair. The deck is screwed. That's very likely shed oxide.
That can be damaging to heads. Any tape subsequently put into the deck can be harmed as well.
Let me guess ... a random eBay purchase? And "tested" and "working" -- ie all the normal lies/BS?
I would tell the seller he has two options -- pay for return (and refund), or pay for supplies to clean it. Because either way, he will be paying out some bucks.
The ONLY way I'd let this slide is if it was a "for parts / damaged / broken / as-is" sort of unit. And you're planning to salvage it for parts, not try to refurb that unit directly.
As far as cleaning, whatever you will do will be risky.
Clear tape can peel that mess up, mostly, but do not touch anything else with the tapes -- especially not heads or similar.
Vacuum is way risky, not just static, but may suck up something that should not be subjected to suction.
The lube in the deck is screwed. You may need to fully clean and re-grease moving part pathways.
Cleaning an oxide-shed deck us tedious, frustrating, and may still have a bad outcome.