Key Benefits

• With xylitol and erythritol to help maintain tooth mineralisation when used instead of sugar.

• Natural spearmint flavour for lasting freshness.

• Hand-crafted from natural tree saps for a unique chew.

• 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 as a natural alternative to conventional gum — free from plastics and synthetic chemicals. Founder Nathan spent nearly two years developing the first gum made with hydroxyapatite, mineral-rich clays, and natural tree resins. Designed with care and intention, Underbrush reflects a commitment to quality ingredients and sustainable choices, showing how small, consistent habits can make a meaningful difference.

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.

Sweetener (Xylitol), Sweetener (Erythritol), Chicle Gum, Mastic Gum, Spruce Gum, Myrrh Gum, Stabiliser (Acacia Gum), Spearmint Flavour (Natural And Organic), Nano Hydroxyapatite, Calcium Bentonite Clay, Egg-Shell Powder, Natural Terpene Blend - <1% (Menthone, Carvone, Cineol)

For allergens, see ingredients in bold.

Chew 1-3 pieces daily.

Additional Information:

Food supplements and foods sold by Healf should not be used as a substitute for a varied, balanced diet and healthy lifestyle.

If you are pregnant, breastfeeding, have a medical condition, or are taking any medications, please consult with a healthcare professional before use. Use products only if the seal is intact. Store in a cool, dry place, out of the reach of young children. Do not exceed the recommended daily intake.

We make every effort to ensure that product information on our website is accurate and up to date, but packaging and ingredients may occasionally vary from images shown on site. Please refer to the product label and contact Healf before use if you have any questions regarding your specific allergies or intolerances.