Radius Big Brush Replaceable Soft Head Left Hand Toothbrush - 6 ct
$66.99
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5 out of 5 stars
6 February, 2026
originally posted on madebyradius.com
Extra Soft Bristles Give You A Thorough Brushing
The extra soft bristles help people with sensitive gums minimize that sensitivity, while still receiving a thorough removal of plaque. The thinner bristles actually make cleaning between the teeth easier.
5 out of 5 stars
6 February, 2026
originally posted on madebyradius.com
Great festures
I bought and received this toothbrush a week ago and I already feel a difference. I will never go back to a regular sized toothbrush.
5 out of 5 stars
3 February, 2026
originally posted on madebyradius.com
Awesome idea to just replace the toothbrush head!!
You have really hit this one out of the park!!! I've loved your brushes for many years. when you came up with the replaceable heads...I'm very happy to do this! GREAT Concept... we are all trying to do our best for the beautiful environment we have to protect. thank you very much for this!
5 out of 5 stars
25 January, 2026
originally posted on madebyradius.com
Absolute best
Love the extra soft bristles and their flossing design. I always get praised at my dental cleanings. These replacement heads can be hard to find at my local stores, so I bought six 2-packs to last a long time.
1 out of 5 stars
18 January, 2026
originally posted on madebyradius.com
Possible Choking Death
I love the brush head but this handle almost cost me my life. I was brushing my tongue and it came apart almost lodging in my throat. Please you need to find out a mechanism where thisndiesn happen again.
1 reply from RADIUS Customer Service team - 28 days ago
Thank you for sharing this experience with us. We’re incredibly relieved that you’re okay, and we’re very sorry to hear what happened. Your safety is extremely important to us. We take reports like this very seriously, and our team would like to look into this right away. When you have a moment, could you please reach out to us at contact@madebyradius.com so we can gather a few details and make this right for you? Thank you again for bringing this to our attention. We truly appreciate your help in improving our products and keeping all customers safe.
3 out of 5 stars
23 December, 2025
originally posted on madebyradius.com
Put a Replaceable Head on a Scuba Handle—Perfect!
The replaceable head is a useful feature, I ordered two extra. However, in the past I ordered several "Scuba" style brushes, which I really prefer. Why? The handle on a Scuba toothbrush had a bit more flex in it; the thumb indentation had grooves that held your hand better; and the texture of the handle was more tactile, less prone to slip when wet, unlike the newer Big Brush that is hard plastic and harder to hold when wet.
1 reply from RADIUS Customer Service team - 2 months ago
Thank you for your feedback! If you're still interested in the Scuba brush, we still have them available on our website as the "Flex" brush. Same great product with a different name.
5 out of 5 stars
21 December, 2025
originally posted on madebyradius.com
The best
The best toothbrushes ever. I was honestly a little surprised reading all of the bad reviews because I’ve been using this for over 5 years and have the same 2 handles, one for home, and one for travel. They have both lasted me that long. So I don’t understand how other people say that their handles break or don’t last, maybe they’re just being too rough with it? I don’t know. The other thing is, I don’t have trouble with my bristles “falling off”.
5 out of 5 stars
16 December, 2025
originally posted on madebyradius.com
Big BRUSH Love it
I’ve been using radius now for almost 6 years. What a difference of brush makes my dentist loves how fast they get me in and out of the area with cleanings. This brush works so well.
5 out of 5 stars
6 November, 2025
originally posted on madebyradius.com
MOST AWESOME TOOTHBRUSH EVER!!!
I was visiting a friend in NY, and all her family had these gigantuous toothbrushes. I was spitting with her and making fun of how large they were, and she said , “Don’t knock it till you try it. I thought the same thing.”. So she bought one for me, while I was there (that was in 2009). I WAS SOLD!!! (even though it felt unusual at first due to the size) I’ve been using them EVER SINCE! It feels absolutely abnormal to put a standard size toothbrush in my mouth! My mouth feels as if I am able to do such a better job of getting everywhere! I allllways brush my tongue and rod off my mouth also, and this just has MUCH better coverage for that as well. Thank you for such a unsuspecting (I’d never seen them before her house) but great product, Mucho mucho KUDOS!!! The only negative is when I buy replacement heads, the replacement heads are soooooo much smaller than the ones that come when you purchase the entire brush. I purchase them (brush and heads at our local health food store. That has been very frustrating, because I have felt forced to purchase a new brush each time. But as far as brushing teeth, there’s not a better toothbrush in my opinion! 100 stars! ⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️
1 reply from RADIUS Customer Service team - 3 months ago
Thanks for the love! We're so glad you love our Big Brush ❤️ It sounds like your store carries our Source replacement heads, which are 50% smaller than our Big Brush replacement heads. You can always find the right size on our website: https://madebyradius.com/products/the-big-brush-replacement-head-2-pack2
5 out of 5 stars
18 October, 2025
originally posted on madebyradius.com
super soft replacement head
Have been using Radius for many years but this was first purchase of super soft bristles. The uneven cut of the bristles works great for loading it with tooth powder since I switched from paste. Really comfortable clean for teeth and gums.
5 out of 5 stars
10 October, 2025
originally posted on madebyradius.com
My kids and I are never using another brush!
By far my favorite toothbrush and I’m never using a different one! Even my 1 and 3 year old love using them and the fact there’s no guilt with them being eco friendly is an even bigger win!
5 out of 5 stars
10 October, 2025
originally posted on madebyradius.com
(no review title)
I love these toothbrushes! They are amazing! I don’t want to ever use any other product now!
5 out of 5 stars
28 September, 2025
originally posted on madebyradius.com
Love love love!
I got this toothbrush from a value market. OMG! The whole family loves them. The feeling of freshness, cleanliness and comfort is amazing. They all happen to be left handed, but they are still comfortable and easy to use. Bonus that they are made in the USA. This is what we will be using from now on. Thank you!
1 reply from RADIUS Customer Service team - 5 months ago
Hello Dina, thanks for the kind words! Our Big Brushes are available in both Left and Right handles :)
5 out of 5 stars
21 September, 2025
originally posted on madebyradius.com
Excellent toothbrush
I have been using this type of toothbrush for many years, and I am very happy with it.
5 out of 5 stars
30 August, 2025
originally posted on madebyradius.com
Uniquely valuable for people with hand tremors
This is a review of the Radius Big Brush, in two parts, the first part general and the second part specifically addressed to people with hand tremors, in particular people with essential tremor. 1. I’ve been using the Radius Big Brush for many years. I find it exceptionally satisfying, in that it gives the gums a pleasant massage, and the bristles have just the right degree of yield. 2. For people like myself, who have so-called essential tremor, or I would think any type of hand tremor, the Radius Big Brush design is uniquely valuable. I have had essential tremor since childhood (yes, that’s possible), and this brush design has solved problems with toothbrushing that I had for much of my life: it greatly reduces the need for precision in placing the brush so as to brush the gum line, and it eliminates the rigid part of the brush knocking into the teeth. A supplementary remark for anyone who works in a hospital: because the Radius Big Brush Is so helpful for people with hand tremors, I regard it as being a prosthetic for people with this problem, and I think any hospital would be well advised to carry a stock of Radius Big Brushes, so as to be able to give one to any patient with hand tremors who is not already aware of this product. Please note that these remarks apply specifically to the Radius Big Brush, not to the Radius product with the small brush head; the small brush head is not especially helpful for people with tremors.
5 out of 5 stars
15 July, 2025
originally posted on madebyradius.com
Smart and Sustainable
I’ve been using the RADIUS Source™ for a while now, and it’s easily one of the most comfortable brushes I’ve tried. The wide head covers more surface, and the soft bristles feel gentle but clean really well. The handle is ergonomic and made from recycled materials, which I love. Plus, you can just replace the head instead of tossing the whole thing smart and sustainable.
5 out of 5 stars
15 July, 2025
originally posted on madebyradius.com
Great fit
I’ve been using these with my RADIUS handle, and swapping them out is super easy. The bristles are soft but effective, and each head lasts a while before wearing down. I love that it cuts back on plastic waste since I’m only replacing the head. Great fit, great quality just makes sense.
5 out of 5 stars
6 July, 2025
originally posted on madebyradius.com
Winning combination
Great toothbrush handle with replaceable heads is a winning combination. And the heads are also great! Bigger and softer than most toothbrush heads, so they get my teeth cleaner faster.
5 out of 5 stars
30 May, 2025
originally posted on madebyradius.com
IDEAL FOR BIG TEETH
BEST AND SOFTEST TOOTHBRUSH ON THE PLANET! I PERSONALLY LIKE THE NON FLOSSING BRISTLES AS THEY ARE SOFTER ON YOUR GUMS. GIVES GUMS A NICE MASSAGE AND GREAT FOR BIGGER TEETH. I LIKE THE ORGANIC SPONGE FLOSS TOO BUT WISH IT WAS THICKER.
2 out of 5 stars
13 May, 2025
originally posted on madebyradius.com
Great concept, horrible design.
Me and my wife have used a total of 5 handles in the last year. Every handle has broken after replacing the first head. The replacement bristle part is awesome, however, the handles do not hold up long at all. The slot where you insert the replacement head has either broken or become very loose to where the bristle head just falls off while brushing. Very disappointing given the price.
1 reply from Bonnie Bachman team - 9 months ago
We are sorry to hear about this issue you've had with our Source Toothbrushes. Please contact us at contact@madebyradius.com with your full name and address and we would be happy to send some replacements to you. We want our customers to be totally satisfied.