Mastic Mint
The first remineralising gum powered by natural, multifunctional ingredients to fight bacteria, strengthen enamel, and support healthier gums and teeth.
£11.69
Free sample each month
Pause or cancel anytime
365 day free returns
Back in stock: 30/04/2025
Buy now, pay later from £3.25/mo with
Free UK shipping over £50, free returns.
Key Benefits
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Fights bacteria and freshens breath.
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Supports enamel remineralisation.
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Promotes healthier gums and teeth.
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Made with natural tree saps.
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Guilt-free, gluten-free, and cruelty-free.
Underbrush Gum is a natural, hand-crafted chewing gum designed to support oral health beyond brushing. Made from premium, natural tree saps, it actively fights harmful bacteria, freshens breath, and helps protect against cavities. Unlike brushing, which only works for a few minutes, this gum continues to neutralise acids and support remineralisation while you chew. Packed with essential minerals, it helps rebuild enamel, reverse early tooth decay, and promote healthier gums. The firm, long-lasting chew also tones facial muscles, making it a truly multifunctional gum.
Perfect for on-the-go oral care, this gluten-free and curelty-free gum is a simple and effective way to maintain a cleaner, healthier mouth.
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.
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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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Every product undergoes our rigorous Healf Curation Process, ensuring you are always getting the best when it comes to your wellbeing.
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The Discovery
Expert Validation
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