Baby and kids toothbrushes by age, tried stage by stage: Radius
In short
Radius is a children's toothbrush brand with 40 years of history, said to be the No. 1 seller in the US. The writer received Radius toothbrushes for free and used them in order as the child grew: Radius Pure Baby from 6 months, then Radius Tots, Radius Tots Plus and Radius Big Kids Forever for ages 6 and up. Verdict: Radius covers softness, cleaning power, safety and the environment, so the writer plans to keep using it.

Good to know
- Pure Baby
- For 6–18 months, about 6,000 bristles, 360-degree round head, can be sterilized in boiling water or a bottle sterilizer
- Tots
- For 18 months–7 years, about 3,600 bristles, 12 colors
- Tots Plus
- For 36 months–8 years, non-slip handle
- Big Kids Forever
- For ages 6 and up, replaceable brush head, handle switches for left- or right-handed kids
- About the brand
- Said to be accepted by the American Dental Association (ADA) and sold at Seoul National University Hospital
Prices as written by the tester on Apr 22, 2026 · not updated automatically

Which toothbrush should you use when baby teeth start coming in?
One of the things I really worried about while raising my kid was oral care. Especially once the baby teeth started coming in, I had so many questions about which children's toothbrush to use..!!



Then I came across Radius, a children's toothbrush brand famous for being No. 1 in sales in the US. It's an oral care specialist with 40 years of history, which made me trust it more, and after actually using it I understood why so many moms recommend it..??


Why I trusted Radius toothbrushes
Radius is also said to be famous as a children's toothbrush accepted by the American Dental Association (ADA) for both excellent cleaning power and softness. That part especially won me over. I always thought a kid's toothbrush had to be soft above all, so a brush that nails cleaning power too really felt different. It's also said to be stocked at Seoul National University Hospital, which raised my trust even more.



These days we have to think about the environment too, right? I also liked that Radius keeps working on environmental protection with biodegradable toothbrushes. It's something my child uses, so a brand that's safe and thinks about the planet as well really appealed to me.
Baby toothbrush for 6–18 months: Radius Pure Baby
Radius Pure Baby is a toothbrush for children aged 6 to 18 months, and its roughly 6,000 bristles give a really soft feel. Pure Baby was the first line I tried. At first I wondered whether something this soft would be okay, but it was actually better because it didn't irritate my child's gums.
What I liked most was that the bristle tips are rounded, so it doesn't hurt even when it touches the gums. My child isn't used to brushing yet and sometimes chews or bites down hard, but I worried less.


Pure Baby also has a 360-degree round head, so there's no worry about poking, and the soft bristles give a gum-massage effect, so it felt like care happens naturally while brushing. It's free of dyes, toxins and harmful substances, so I could use it with peace of mind, and it can be sterilized in a bottle sterilizer or by boiling, which makes hygiene easy. As a mom, these were genuinely important points.
Toddler toothbrush for 18 months–7 years: Radius Tots
Radius Tots can be used from 18 months to 7 years and has about 3,600 bristles. As my child got a bit older, I tried the Tots line too, and it felt just as soft but with better cleaning power. It comes in 12 colors, so my child picked one and got more excited about brushing.


Brushing on their own at 36 months–8 years: Radius Tots Plus
Radius Tots Plus suits children from 36 months to 8 years and has a NON SLIP handle. I liked how easy it is for kids to hold and brush by themselves. It doesn't slip even when their hands are wet, so they could use it steadily.
Big kids age 6 and up: Radius Big Kids Forever
Radius Big Kids Forever is for ages 6 and up, and its replaceable brush head makes it an eco-minded product. This was the line that impressed me most in the end. You only swap the head, so apparently you can cut waste by a whopping 86 percent.
You can mix and match handle and head colors, so my child could decorate it their own way, which was a fun bonus. You can also change the handle direction, so both left-handed and right-handed kids can use it comfortably, which felt very thoughtful.


The head of Big Kids Forever is concave, so it wraps around the teeth as you brush, and brushing felt much more thorough. Even though my child is still clumsy at brushing, the teeth definitely felt cleaner afterward.
So how were Radius kids toothbrushes?
What I felt while using Radius kids toothbrushes is that the details made for children are really well done. It's not just soft; it felt like cleaning power, safety, design and the environment were all considered.


For anyone agonizing over a children's toothbrush, I really want to recommend Radius. If you're torn about a baby or toddler toothbrush, I think you'll be happy if you try it once. It's also easy to use for daycare, and I was even more satisfied because it makes kids enjoy brushing time.
I plan to keep using it steadily from now on. Oral health habits start young, so choosing a good children's toothbrush really matters, I feel..!






