Feno is on a mission to transform oral health and unlock its potential to revolutionize overall systemic health. By harnessing cutting-edge technologies and proprietary formulations, Feno has developed an innovative connected smart toothbrush that provides a comprehensive and efficient oral care solution, delivering a thorough cleaning in just 20 seconds.
Feno (feno.co) has 93 customer reviews on Five Star Index, with an average rating of 4.6 out of 5.
Also known as
feno.co
Website
feno.co
Category
Dental Services
Location
Culver City, California
Listed on Five Star Index
2026
About these reviews
Replies
The company replied to 15% of reviews.
Latest
Most recent review: October 2026.
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Reviews are shown as their authors wrote them. The company can reply, but cannot edit them.
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Feno is such an innovative, yet simple solution to brushing your teeth! I truly feel like my teeth are squeeky clean after using my Smartbrush, and I feel like I'm saving myself time during my daily routine which is an added bonus.
Response from FenoJun 16, 2025
We love hearing this—thank you! It’s awesome to know your Smartbrush is keeping your teeth squeaky clean and saving you time. That’s exactly what we designed Feno for—simple, powerful care that fits into real life. Keep enjoying the routine!
FS
Fred S.
Cutting Edge Product That Requires Patience and Flexibility
I have had the Brush for around 6 weeks. I love the convenience and how well it brushes my teeth in less than 30 seconds. I am looking forward to my visit to the dentist next year to see if the Brush truly is hitting all the spots in my mouth accurately and correctly. However, the reason why I wouldn’t rate this 5 stars is because after only having the Brush for 6 weeks, the motor has stopped working. For the price point of this Brush, I would expect it to last for many years. I have reached out to the team but haven’t received a response yet. Hopefully, I just received a lemon, and they can replace it and provide great customer service to make up for the inconvenience this has caused. Once things are resolved, I can use the new Brush, and hopefully, it can be durable and not stop working like the Brush I have now. Thankfully, during this trial, I did not throw away my old Brush, so I have gone back to use my Quip toothbrush in the meantime.
Update 1/6/25: The team was VERY responsive in resolving this issue and sent me a new Brush handle that had been working for a while up until now, where it is not recharging. However, after reaching out to the team, I got a response the SAME DAY that a replacement handle and charger will be sent. This is a new product, so issues are expected, but what makes this move up to a 3 star rather than 1 star with the issues is how GREAT the customer service has been in helping and sending replacements. Hopefully, it gets to the point where no more replacements are needed due to the quality and durability of the product. Definitely still a fan. If you like cutting-edge tech, are willing to be flexible, and work with the team regarding any issues that may arise, this is the product for you.
Response from FenoJun 16, 2025
Thank you so much for taking the time to share such a detailed and balanced review. We’re genuinely sorry for the trouble you experienced with the brush—your patience and understanding through it all means a lot. We're glad our team was able to respond quickly and get those replacements out to you.
As you mentioned, being at the cutting edge can come with some bumps, but feedback like yours helps us keep improving both our product and service. We're grateful you're still a fan, and we’ll keep working hard to earn that 5th star. Don’t hesitate to reach out if anything else comes up—we’re here for you!
MS
Michael S.
Feno is the future of brushing your teeth
We don't think about the future of toothbrushes often, but thankfully, Feno did. If you had told me that my teeth would feel just as clean from a 20-second brush as if I had done a two-minute brush, I wouldn't believe you. However, now that I have a Feno smartbrush, I believe it. Not only that but there's a camera that keeps track of your oral health, providing useful information, not meaningless stats. Buying a Feno has been a win-win all around. My morning routine is more efficient, I know my oral health more frequently, and of course - my teeth feel great. I can't recommend Feno enough!
CH
Charles
In term of time wise
In term of time wise, i enjoy it.
AV
Arrianne V.
The Feno brush is a unique way to brush…
The Feno brush is a unique way to brush your teeth! The brush's gentle, yet effective bristles seemed to reach all the nooks and crannies in my mouth effortlessly.
GN
Guerdelove N.
Amazing for your watch I love it
Amazing for your watch I love it
SE
Stacie E.
It’s such a great product
It’s such a great product! It cleans beautifully and makes my mouth feel refreshed. I’ve never had a tooth brush that has ever done anything close to this one!
SA
Sarah
I have been dying to try this product
I have been dying to try this product! I literally cannot wait to be able to make my coffee or do dishes are laundry while brushing my teeth. Having to hold the toothbrush and do the work yourself is just too much. This is truly a lifesaver.