{trephin} (tref-fin) N 1. A small meeting place to release pressure from the brain. 2. A team dedicated to helping individuals refine their beauty.

About Us

In the vibrant heart of downtown Boston, Trephin—voted Boston Magazine’s Best of Boston 2011, 2013, 2015, 2016 & 2018—is a creative space 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 the team begins by listening, the start to all great relationships. Because beyond all things beauty we build a bond by putting you in the center of the creative process. Trust that no matter what service you’re coming in for, you will leave empowered and the best version of yourself.

Our Products

  • R+Co Product Line
  • Kevin Murphy
  • Cult + King
  • Evo
  • Hotheads Hair Extensions