"Into the Mystic.." Immortalized by a Van Morrison song, this is the place for a transcendent hair cut experience.  

From Yelp: This is it.  The barber shop that defines what a barber shop should be.  A place to go, chill, tell jokes, and feel like a man's man. I am not a man, but had the pleasure of taking my "men" here and was impressed.  There is an element of old school charm mixed with an accessibly cool vibe.  I highly recommend this place for all the dudes, guys, bro's, and gentlemen of SF.  In a word, this place is sexy.