{trephin} (tref-fin) N 1. A dynamic team of stylists dedicated to hair craftsmanship and revitalizing style in Downtown Boston.

About Us

In the vibrant heart of downtown Boston, Trephin—voted Boston Magazine’s Best of Boston 2011, 2013, 2015, 2016 & 2018—is a salon that welcomes you with warmth and wows you with its quirky, comfortable style. Here, you’ll enjoy a level of service second to none. Owner Nathan Knowles brings years of experience to his work. Along with a unique combination of editorial work, education, fashion, and passion.

At Trephin every stylist begins by listening. Because it’s impossible to create a look for you without putting you in the center of the creative process. Whether you have booked a simple trim, a consultation to solve a daunting color puzzle, or a new cut for a new look, every visit is individualized for who you are and what you want, today. Come to Trephin with confidence, knowing that every product that touches your hair is healthy, beneficial and the finest available. And leave with confidence, knowing you look your very best.

  • Trephin Salon space

Our Products

  • R+Co Product Line
  • Kevin Murphy
  • Pulp Riot
  • Calura
  • Cult + King
  • Evo
  • Hotheads Hair Extensions
  • Oligo
  • Olaplex