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Big Brush with Replaceable Head – Big Head Toothbrush

Meet the RADIUS Big Brush Toothbrush, a brush that redefines what sustainable oral care feels like. Designed for those who crave a superior, full-mouth clean, this big head toothbrush features a supersized oval head with over 6,000 soft, plant-based bristles, about three times more than an ordinary toothbrush. The large
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$11.00
$11.00
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Supersized Performance
Sustainable Design
Planet-Friendly Materials
Gentle & Effective
Purple Galaxy
Soda Pop Eco-Grind
White Marble
Midnight Sky
Gold Satin
Seashell Coral
Hot Pink
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  • Estimated Delivery:Feb 06 - Feb 10

  • Free USA Shipping: On all orders over $30

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Jack Belin

Verified Buyer

None Better; none as good on the planet!

Radius tooth brushes are not new to me! I've used them for years, ever since I visited the PA factory! The best testimonial must be my dental exams. No other toothbrush for me!

Benefits

The Big Brush isn’t just bigger, it’s better. This ergonomic toothbrush is designed for your dominant hand, delivering comfort and control while maintaining a 45° brushing angle to protect your gums and enamel.

The wide, oval head is designed to cover more surface area, giving a gentle massage to your gums while efficiently removing plaque and debris. Experience the difference a deep cleaning toothbrush can make for your oral health with the RADIUS Big Brush.

Materials

  • Handle: Made from renewable timber and ergonomically sculpted for a balanced grip.
  • Head: Big Brush replacement toothbrush heads are compatible with other RADIUS handles.
  • Bristles: Plant-based bristles for an effective clean that’s gentle on you and the planet.
  • Packaging: Made from recycled cardboard and recycled PET, this fully recyclable packaging feels as good as it looks

Sustainability

The Big Brush proves that a sustainable toothbrush doesn’t have to compromise on deep-cleaning power. The head is replaceable, so you can reuse the handle for years—making this one of the most eco-friendly brush options on the market.

With its replaceable head system, the RADIUS Big Brush toothbrush is 93% less wasteful than your average toothbrush. Each handle is made from renewable timber and enhanced with EcoPure, an organic additive that helps it biodegrade, even in landfill and marine environments. BPA and PFAS-free for you and the planet.

30-Day Guarantee

We stand behind every RADIUS product. If you don’t fall in love within 30 days, return it for a full refund, no questions asked.

Shipping Info

All orders ship in recyclable packaging. Free U.S. shipping on orders $30 +.Learn more in our Shipping Policy.

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FAQs Reviews

The RADIUS Difference

Built Different. See It in Action.

Experience the Difference

An ergonomic toothbrush is designed for your dominant hand

Supersized Head for Superior Cleaning

The big head toothbrush delivers 3× the bristles of a standard brush for a complete mouth clean. The extra-large design evenly distributes pressure, protects gums and enamel, and makes brushing quicker and more effective.

Replaceable Head System

Designed to reduce waste by reusing the handle and swapping the head. All RADIUS replacement toothbrush heads are compatible with the Big Brush handle.

Ergonomic Handle with Purpose

Made from renewable timber, the handle features a 45° neck alignment that fits your hand and mouth perfectly. It’s the ergonomic toothbrush you didn’t know you needed.

A Favorite for Healthier, Happier Mouths

Customers Raving About RADIUS

Better by Design

We rethink everyday oral care from the ground up. From ergonomic shapes to bristle density and balance, every detail is intentionally designed to clean better, feel better, and last longer.

Cleaner Ingredients, Fewer Compromises

We believe oral care should be effective and clean. That’s why our products are free from unnecessary additives and made with materials and ingredients chosen for safety, performance, and peace of mind.

Thoughtfully Sustainable

Sustainability is built into everything we make. We use recycled, plant-based, biodegradable, and compostable materials wherever possible — designing products that reduce waste without sacrificing performance.

Frequently Asked Questions

Answers to common questions to help you understand things better.

How often should I replace the head?

Every 3-6 months or when bristles show wear. Just pop off the old head and click on a new one. A RADIUS replacement head toothbrush can last up to 3x longer than other brands, but the life of your toothbrush depends on how hard you brush and how often. The replacement head toothbrush is designed to easily remove and snap into place, no twisting required

Is the RADIUS Big Brush biodegradable?

Yes. Each RADIUS Big Brush is a biodegradable toothbrush made from renewable timber and sustainable by design. In addition, all RADIUS toothbrushes contain EcoPure®, an organic additive that helps products biodegrade more quickly in landfills. A material without EcoPure degrades at a rate of 3.2%, but a material with EcoPure degrades at a rate of 40.2%. That’s a significant change!

Are the bristles soft?

Yes. The soft, plant-based bristles are end-rounded for a gentle yet effective clean.

Is the RADIUS Big Brush good for sensitive gums?

Absolutely. Its large head distributes pressure evenly to gently massage your gums, helping to prevent recession and bleeding.

Where is the RADIUS Big Brush made?

Every Big Brush is crafted in the USA at our Pennsylvania facility using low-energy machines, a commitment to sustainability from handle to bristle

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