ali M.
I love the product and continued…
I love the product and continued support and updates.

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.
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ali M.
I love the product and continued support and updates.
Fiona C.
I've left reviews for Feno before because I genuinely love this toothbrush, but I had to come back and write specifically about their customer service — because it deserves its own spotlight. A few weeks ago I sent them a simple, low-stakes email. My brush wasn't holding a charge the way it used to, and I was really just asking whether this was a known issue after about 18 months of use. I wasn't complaining. I wasn't demanding anything. I was genuinely just looking for information. The response was immediate — and completely blew me away. No runaround, no request for purchase records, no lengthy troubleshooting questionnaire. They simply told me they were putting a new brush in the mail. In a world where getting a company to acknowledge a problem — let alone actually solve it without a fight — has become an Olympic sport, Feno just handled it. Quietly, generously, and without making me feel like I had to justify myself. This is what customer service is supposed to look like. They stand behind their product and they value their customers. Highly, highly recommend — not just the brush itself, but the whole experience of being a Feno customer.
Ben W.
This thing is actually awesome. At my last dentist appointment, I had my best gum checkup ever. Finding the right mouthpiece fit is easy. One thing I didn't know I would enjoy would be the time saving aspect of this toothbrush. Over the course of a week you save: 21 minutes, 30 day month: 90 minutes, Year: 1,095 minutes, which is 18 hours 15 minutes. That's a freaking win in my book. only complaint is the tooth paste. The straw does not reach the bottom making it difficult to get to the last part of the liquid.
Todd R.
I have been using my Feno tooth brush for about 4 months now and I have to say that I love this tooth brush. My dentist said that he has noticed improvements in the way my teeth look so that proves it works. I ended up buying 3 more for my family members. I highly recommend Feno above all other tooth brushes out there.
Justin G.
Excellent product! Have used other u-brushes and this one takes the cake. Next level product and next level customer care. You won’t be disappointed- definitely worth the money.
Annie
I LOVE my Feno. My teeth have never been cleaner and I bought one for my boyfriend. My mom just got one too. I think it's amazing. I just wish the tooth foam was more minty.
David L.
The Feno Smartbrush provides a 5 star brushing experience every time and I love it. I developed a very severe, mentally and physically draining OCD when brushing my teeth, and the Feno Smartbrush is definitely helping to snap me out of my intense daily brushing sessions. Also, Feno Customer Support is absolutely world class, so you can rest assured that any issue will be dealt with promptly in a super professional and friendly manner. Many thanks and all the very best to everyone at Feno for a brilliant invention and world class customer support :-)
Danh T.
I purchased the Feno Founder's Kit a while ago. Though I did not use the AI feature to scan your teeth and have a professional give you feedback on it, I appreciate the automatic 30-second U-shaped toothbrush function for a busy person like me. Though people might judge a product like Feno to be gimmick or unnecessary, I find it as a premium addition to my oral healthcare. We only get one set of teeth in our lifetime, and I would like to think whether you, at first glance, judge the product as unnecessary or necessary, experimentation and self-assessment of the product is important to decide if it is for you. For me, I found this product does the job for my needs of brushing quickly and getting to work or going to sleep paired with other oral care systems. Give Feno a try!