In this week’s episode, Kristen interviews Dr. Heather Kunen, a New-York-City-based orthodontist and co-founder of Beam Street. Beam Street is the Dry Bar of dentistry: It offers teeth cleanings, whitening, and Invisalign services — aka, all the things millennials are after. Dr. Kunen talks about how she came up with the idea, what it’s like to be the only female co-founder of the business, and the secret to her marketing success.