How I Built This with Guy Raz
How I Built This with Guy Raz

Advice Line with Neil Blumenthal of Warby Parker

January 15, 2026

AI Summary

5 min read

🎙️ The Voices & The Context

  • The Format: Live advice hotline format on the "How I Built This Lab" podcast, where host Guy Raz fields caller pitches and business dilemmas, joined by expert guest for real-time coaching.
  • The Key Players:
    • Neil Blumenthal: Co-founder/co-CEO of Warby Parker (eyewear disruptor since 2010); back on the show from his 2016 episode. Shares wisdom on co-founder chemistry, scaling DTC brands, and AI integration.
    • Host Guy Raz: Energetic interviewer, connects dots with his own stories (e.g., cold plunges, family trips) and past podcast guests.
    • Callers: Kimber Crandall (Pearl Pop gummy toothpaste), Brian Dement (Salt and Light Wellness light therapy), Tanner McCraney (Cowboy Country Club golf merch club).
  • The Vibe: Optimistic and educational—supportive banter, founder war stories, actionable pep talks; feels like eavesdropping on a masterclass with startup cameos.

Continue reading the full summary in the app — free to try.

Read Full Summary →

Free • No credit card required

What you'll learn

  • 1 (00:00) **🎙️ Introduction: Neil Blumenthal**
  • 2 (04:18) **Co-CEO Partnership with Dave Gilboa**
  • 3 (06:29) **Warby Parker's AI Glasses Initiative**
  • 4 (08:00) **Caller 1: Kimber Crandall - Pearl Pop (Gummy Toothpaste)**
  • 5 (22:56) **Caller 2: Brian Dement - Salt and Light Wellness (Light Therapy Studios)**
  • 6 (35:52) **Caller 3: Tanner McCraney - Cowboy Country Club (Golf Apparel & Membership)**
  • 7 (46:56) **Neil's Key Advice for Founders**

+ Full timestamped outline available in the app

Show Notes

Warby Parker co-founder Neil Blumenthal joins Guy on the Advice Line, where they answer questions from three early-stage entrepreneurs. Plus, how AI integrations with glasses are helping us see the world in a whole new way.

First we meet Kimber in Utah, who wants to take her chewable toothpaste gummies mainstream. Then Brian in California, who’s wondering how to vet franchisees for his light therapy studios. And Tanner in Tennessee, who needs help building a team he can trust to scale his country club-inspired lifestyle brand.

Thank you to the founders of Pearl Pop, Salt and Light Wellness, and Cowboy Country Club for being a part of our show.


If you’d like to be featured on a future Advice Line episode, leave us a one-minute message that tells us about your business and a specific question you’d like answered. Send a voice memo to [email protected] or call 1-800-433-1298.

And be sure to listen to Warby Parker’s founding story as told by Neil and his co-founder Dave on the show in 2016.


This episode was produced by Sam Paulson with music by Ramtin Arablouei. It was edited by John Isabella. Our audio engineer was Cena Loffredo.

You can follow HIBT on X & Instagram and sign up for Guy’s free newsletter at guyraz.com or on Substack.

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

How I Built This with Guy Raz