Philips Sonicare FlexCare+ HX6921/02

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Overall

#198 in

Electric Toothbrushes

according to Reddit Icon Reddit

Sentiment score25% positive
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Last updated: Apr 29, 2026

Reddit Reviews

Reddit IconServileLupus
5 months ago

I love my sonicare. I went for the diamondclean back in 2022 and its still working fine. I don't really use the smart features, if those are important for you then I would get it. I mainly wanted the nice glass cup charging thing. Lets you have a cup for rising and have it be your charging base instead of one of the tiny obnoxious ones that likes to get knocked over. The pressure sensor is amazing, both have that but what I found was super helpful and not something I thought would be is the timer for when to brush where. The previous sonicare series 2 I used had 4 brushing zones. The 6 on the diamond clean seems to help a ton with making sure I brush properly. Partitions brushing time into 6 smaller sections 3 for top and 3 for bottom. I gifted my sister one (Flexcare+ which is discontinued) as well back in 2017 and hers just died a few months back if you wanted an idea on lifespan

Reddit IconRagingITguy
10 months ago

I use smart plug. 1.5 hours charger every 2 days. It's a 2015 soniccare and still good. I had to open the other one to fix a rattle so I changed the batteries on both. Still same charging cycle

Reddit Icondx30
about 2 months ago

for EDS, the main things i'd focus on are a super soft bristle toothbrush (like the colgate extra soft or sensodyne pronamel soft), since a lot of us have gum sensitivity and fragile tissue that gets irritated easily. an electric toothbrush like an oral-B or sonicare on a sensitive setting can also be a game changer because you don't have to press as hard, which helps avoid bruising or micro-tears. for toothpaste, sensodyne is a pretty popular choice in this community because it's gentle and helps with sensitivity. biotene is another good one if you deal with dry mouth, which is pretty common with EDS and dysautonomia overlap. also worth mentioning since a lot of us deal with POTS or general dysautonomia alongside EDS, staying on top of electrolytes actually makes a real difference in how your whole body feels, including things like dry mouth and fatigue that can affect oral health. i've been using salties, which are just unflavored electrolyte drops, and they're easy to add to any drink without messing with your routine. but back to the actual dental stuff, definitely check with your dentist about fluoride treatments if you have enamel issues, and ask about a custom mouthguard if you're a jaw clencher since hypermobility can make TMJ stuff way worse.

Reddit IconOverallPalpitation
11 months ago

I’ve had the Sonicare range from the days before Philips bought it, thankfully they didn’t ruin it. Recently bought my mum an inexpensive one as the oral b she complained always ran out of charge. Ordo from Amazon, she was happy with it.

Reddit IconJohoski
6 months ago

I bought a sonicare from Amazon for cheap and it lasted about a year. I bought another sonicare from my dentist and it's still going strong, six years later.

Reddit Iconlunch22
about 2 months ago

I have tried manual toothbrush and the Philips One travel toothbrush and they don’t compare to the full size Sonicare, which I now bring on every trip. Obviously, I don’t bring the big case.

about 2 months ago

I take off the head and use the cap that comes with head refills https://preview.redd.it/55qc75oeonog1.jpeg?width=778&format=pjpg&auto=webp&s=1c0dc3805041a35b7bb85842c5837ee331d11a83

about 2 months ago

Why do you need a case at all? I travel with a Sonicare and separate the head from the body and use the tiny cap that comes with replacement heads. https://preview.redd.it/scm4aoprhmog1.jpeg?width=778&format=pjpg&auto=webp&s=e5fddee74590ffed76e7b348a37da8497592a7f9

about 2 months ago

I have a different model, but you can buy small alternatives to the case charger.

Reddit Iconmermands
about 2 months ago

I bring my full size Sonicare too. I had the same experience with Philips One. About to leave on a two month trip and I'm tempted to take a travel water flosser as well.

Reddit IconFresh-Computer-6994
about 1 month ago

I will not deinfluence you. Mas okay ang Philips Electric Toothbrush Sonic series. There are some published studies na better ang mentioned brand na yun. Dentists also agree when it comes sa clean function and bristles shape.

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