Growth Mavericks
Growth Mavericks
Adam Callinan
Brynn MacLennan on Slate Flosser: From Idea to $1M+ and Landing Target!
42 minutes Posted May 28, 2026 at 9:00 am.
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In this episode, Adam Callinan sits down with Brynn MacLennan, founder of Slate Flosser, to break down how she built a fast-growing oral care brand from scratch. From early product validation with dentists to raising $200K on Kickstarter, Brynn shares how she scaled to $1M in revenue and made the jump from DTC into retail.

This is a real look at what it takes to build, test, and grow a physical product brand in today’s market.


🚀 What You’ll Learn

  •  How Brynn validated her product before going all in 
  •  The path from Kickstarter to $1M in revenue 
  •  What it takes to land retail deals with Target 
  •  Why DTC success matters before scaling retail 
  •  The biggest mistakes founders make with pricing and margins 
  •  How to build brand awareness in a crowded category 
  •  The mental side of entrepreneurship and staying resilient 

🧠 Key Takeaways

  •  Validate first—don’t build blindly 
  •  DTC creates leverage for retail expansion 
  •  Pricing and margins will make or break your growth 
  •  Influencers can outperform paid ads when done right 
  •  Focus and consistency beat chasing every new channel 

🔗 Explore More

👉 Pentane: https://www.pentane.com
👉 Growth Mavericks Podcast: https://www.growthmaverickspodcast.com
👉 Slate Flosser: https://slateflosser.com