Soft kids' toothbrush that ended a 7-year-old's brushing tears: Radius
In short
Radius is a US kids' toothbrush brand with 4 stages covering ages 6 months to 6 years and up. Tested on a 7-year-old and a 10-year-old, the Radius toothbrush's rounded bristle tips meant the 7-year-old daughter, who used to cry that brushing hurt, happily brushed on her own for 3 minutes. The large Radius head seemed worrying at first, but it cleans more in one pass and even massages the gums, which made it a satisfying pick.
Good to know
- Stages
- 4 stages in total, from 6 months to age 6 and up
- Pure Baby
- Ages 6–18 months; dye-free clear toothbrush, safe to boil or use in a bottle sterilizer
- Tots
- Ages 18 months to 7 years
- Tots Plus
- Ages 36 months (3 years) to 8 years; non-slip handle
- Big Kids Forever
- Ages 6 and up; handle and head snap together, so you replace only the head
- Colors
- 2 handle colors, 6 head colors
- Shipping
- Ships within Korea, no US direct order needed
Prices as written by the tester on May 2, 2026 · not updated automatically
Are you fighting the daily toothbrushing war with your kids too? My 7- and 10-year-old each have a different problem, so it's a war every single day, and then I met a kids' toothbrush that might fix it: the Radius toothbrush! The bristle tips are rounded and soft so it doesn't hurt, and it's made from biodegradable material so replacing it feels guilt-free. Let me introduce it to you 🪥🫧
What is Radius, the US kids' toothbrush brand?
Radius is a US kids' toothbrush brand, and you can get it shipped quickly within Korea rather than ordering direct from the US. When the parcel arrived, it was not a US direct purchase, just fast delivery from Korea, haha. It is said to be stocked at Seoul National University Hospital for its cleaning power and softness, and among moms it already has a reputation as a luxury toothbrush because the bristle tips are rounded and gentle.
It was safely wrapped up in bubble wrap, too~
Radius toothbrushes come in 4 stages in total, usable from 6 months to age 6 and up.
According to the brand's description, Radius is a US oral care brand with a 40-year tradition, and the No. 1 kids' toothbrush brand in the US, the only one recognized by the American Dental Association for both cleaning power and softness!
How do the 4 Radius toothbrush stages differ?
Radius Pure Baby (6–18 months)
Radius Pure Baby is the baby toothbrush line for 6 to 18 months, and it's dye-free, so the toothbrush is clear! I'd never even thought about dyes when buying a toothbrush, but that's what you'd expect from a No. 1 brand, haha. It has the softest bristles even among the famously soft Radius brushes, can be boiled or used in a bottle sterilizer for extra convenience, and is said to be a safe baby toothbrush that is non-toxic and free of harmful substances.
Radius Tots (18 months–7 years): what the big head feels like
Radius Tots is the line for 18 months to 7 years. The head is so big that it's barely different from the 6-month one. Radius brushes really do have big heads.
In the photo, the one on the left is the toothbrush my 7-year-old was using before, and compared with the Radius on the right, the head size is hugely different, right? I was a bit baffled by this... I worried the head was too big to clean my kids' tiny teeth thoroughly, and that it would be awkward to reach every corner, but it actually cleans a lot at once, and the big head even massages the gums, which I liked better, haha
Radius Tots Plus (36 months–8 years)
Radius Tots Plus is the line for 36 months, meaning age 3, up to 8 years. It has a non-slip handle, with an ergonomic design that's easy to grip for kids with weak hands who brush on their own.
Radius Big Kids Forever (6 and up) with replaceable heads
Radius Big Kids Forever is the line for age 6 and up, and the handle and head are assembled, so you only replace the head. I replace my kids' toothbrushes every month, and my oldest keeps chewing on hers because she doesn't want to brush, so I have to replace hers even more often, you know? Since I only need to swap the head, it's lighter on the environment, and being made from biodegradable material makes it an even kinder toothbrush!
There are 2 handle colors and 6 head colors, so it's fun to mix and match and assemble different combinations.
Does a soft Radius toothbrush help a child who cries that brushing hurts?
My 7-year-old daughter, who used to cry every time she brushed, brushed for 3 minutes with the Radius toothbrush with no fuss and no tears. When she brushes alone, the plaque on her front teeth doesn't come off well, and when I do it for her, she cries that it hurts, my 7-year-old girl!! I get it, though, because even I sometimes find those micro-fine or ultra-fine bristles way too prickly.
Maybe she takes after her sensitive mom, because brushing is a war every time, but with the Radius toothbrush, whose rounded bristle tips are really soft, she brushed happily for 3 minutes with no grumbling and no crying. She did it by herself, too~~ I guess I should have used Radius sooner!
To all the parents fighting the toothbrushing war every day like me: it's not the kids' fault ㅠㅠ Let's give them a soft, easy-to-use toothbrush, a happy brushing habit and healthy teeth!
