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Mastic Mint
Discover Underbrush Gum’s Mastic Mint—crafted to help maintain tooth mineralisation and keep your mouth feeling fresh.
Free sample each month
Pause or cancel anytime
365 day free returns
In stock. Next day delivery available.
Buy now, pay later from £3.50/mo with
Free UK shipping over £50, free returns.
Key Benefits
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With xylitol and erythritol to help maintain tooth mineralisation when used instead of sugar.
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Natural spearmint flavour for lasting freshness.
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Hand-crafted from natural tree saps for a unique chew.
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Gluten-free and cruelty-free for mindful daily use.
Enjoy a fresh approach to oral care with Underbrush Gum’s Mastic Mint. This hand-crafted gum blends xylitol and erythritol—shown to help maintain tooth mineralisation when used in place of sugar—with a crisp spearmint taste. The natural tree saps create a satisfying, long-lasting chew, while the botanical blend brings a clean, refreshing feel to your daily routine.
Perfect for life on the go, Mastic Mint is gluten-free, cruelty-free, and designed to fit seamlessly into your oral care habits. Chew your way to a cleaner, fresher mouth—anytime, anywhere.
Underbrush Gum was created to be a natural, effective alternative to conventional gum—free from plastics and synthetic chemicals. Founder Nathan spent nearly two years perfecting the first remineralising gum, designed not just to freshen breath but to actively support dental health. Made with hydroxyapatite, mineral-rich clays, and natural tree resins, it helps strengthen enamel and promote oral wellness. More than just gum, Underbrush is a symbol that small, consistent changes lead to lasting benefits.
With our Healf Curation Process, we do the work for you. Shop with confidence knowing that every item has been tried, tested, and curated for you.
Learn more about each step—Brand Discovery, Expert Validation, and Community Testing—here.
Xylitol, Erythritol, Chicle gum, Mastic gum, Spruce gum, Myrrh gum, Acacia gum, Spearmint flavor (natural and organic), Nano hydroxyapatite, Calcium bentonite clay, Egg-shell powder, Natural terpene blend - <1% (menthone, carvone, cineol).
Shipping
At Healf, we prioritize safe and fast delivery for all our customers. Our carefully selected couriers are Royal Mail and DPD.
UK standard delivery
Enjoy free standard delivery on orders above £50, this option usually requires 2-3 working days. If your order is under £50, this delivery option is available for £3.99.
Next working day
For when you need our products urgently, we offer next working day shipping for £5.99. For orders placed before 12.00, we will ship it the same day to ensure you receive your order the next working day.
International
International deliveries can take 7 working days, and up to 4 weeks. The cost is £22.99 for orders below £50, £49.95 for orders above.
Returns
If for any reason you are not satisfied with your order, we provide free 365-day UK returns for all our customers. To initiate your return, simply contact us at team@healf.com, and we'll send you a return slip and help arrange a collection. The item you return must be sent in the same condition as received and inside the original packaging. Once received, we will notify you via email.
For international returns, we unfortunately do not cover the cost. However, we work with an array of carriers and can offer self-posting returns for customers shopping from outside the UK.
Chew 1-3 pieces daily.
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Frequently asked questions
Every product undergoes our Healf Curation Process. With it, you can shop confidently knowing that every item has been tried and tested before it reaches you. Our Healf Curation Process includes three key steps: Brand Discovery, Expert Validation, and Community Testing. Through these, we assess quality, ingredients, effectiveness, and more, ensuring that every product empowers your wellbeing.
The Healf Journal offers detailed insights into different aspects of wellbeing, as well as guidance, research, recipes, and more to help you invest in your personal wellbeing journey. You can also subscribe to our weekly newsletters for the latest updates at Healf and in the wellbeing industry. Subscribe via the sign-up block at the bottom of this page.
We love people who check ingredients as carefully as we do, so you'll find detailed information about the ingredients used on every product page (where applicable). If you see something you'd like to flag with us or have additional questions, please don't hesitate to get in touch—we'd love to hear from you.
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