Sign up for the chance to get a FREE Nathan & Sons All Natural Underbrush Natural Remineralizing Gum! Answer the questions on the linked page & if you're chosen, they will contact you via email for your shipping details.
A New Kind of Gum for a Cleaner Mouth
We’re inviting a limited group of participants to try our Nathan & Sons All Natural Underbrush Natural Remineralizing Gum through our Underbrush Insiders Program.
This isn’t your average chewing gum. Made with wild tree saps and science-backed minerals, Underbrush is designed to support enamel health, help reduce plaque buildup, and naturally freshen your breath - without plastic, artificial sweeteners, or synthetic ingredients.
Why Try Underbrush Gum?
Available in 4 different flavors (Mint, Berry, Cinnamon, and Honey Bun), our Underbrush gum is crafted with these great features:
- Supports daily enamel health with nano-hydroxyapatite
- Helps reduce plaque and surface buildup
- Promotes oral pH balance and saliva production
- Plastic-free, biodegradable gum base made from natural tree resins
- Free from aspartame, sucralose, dyes, and synthetic preservatives
- Crafted for consistent, daily use
What You’ll Receive
- A full-size 18- pack of Underbrush Gum at no cost
- Tips for getting the most out of your chewing routine
- A follow-up request to share your experience through a short feedback survey
Who Should Join
We’re looking for people who:
- Are 18 or older and live in the continental U.S.
- Prefer clean-label, wellness-driven products
- Want to support oral health naturally
- Are open to trying a new kind of gum consistently
- Can share thoughtful, honest feedback after trying our gum
Before You Join
Underbrush Gum is intentionally different from conventional brands:
- It starts firm and softens as you chew - no synthetic rubber or fillers
- Flavor is natural and subtle - not engineered for long-lasting sweetness
- This is an oral care product, not a candy substitute
- Best results come from regular use over time
If you're open to trying something new and naturally functional, we’d love to have you join the program.

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