2 year warranty
HX9911/84
HX991K
Available in

No. 1 Dental professional reccomended sonic toothbrush brand worldwide1
Up to 10x more plaque removal
Up to 100% whiter teeth
4 modes and 3 intensities + vibrating pressure sensor
Slim, compact travel case
Sonicare app for coaching and progress reports
Boost your smile's brightness with advanced Sonicare technology. Polishing bristles remove up to 100% more stain than a manual toothbrush for visibly whiter teeth in just 3 days*.
The C3 Premium Plaque Control toothbrush head is designed to give you your deepest clean yet. Soft, flexible sides and bristles perfectly curve around the contours of your teeth, giving you 4x more surface contact and helping target hard-to-reach spots***
Our DiamondClean 9000 electric toothbrush comes with a standout ombré design for a premium, ergonomic brushing experience that suits your style. Slim, compact travel case in a complementary colour goes anywhere life takes you.
4.2
of 5
969
Reviews
84%
recommend this product
Mich1405
18/07/2026
United Kingdom
Verified buyer
Great features
I love it. Makes my teeth feel really clean. Great features and settings.
This review was made for DiamondClean 9000 Series HX9911/84 Special edition sonic electric toothbrush
Date of Use 2026-06-07
This review was made for DiamondClean 9000 Series HX9911/84 Special edition sonic electric toothbrush
Date of Use 2026-06-07
The fuchsia man
18/07/2026
United Kingdom
Verified buyer
WOW
I have used a Braun electric toothbrush for many years but they haven’t lasted very long and the brush heads only lasted me 3 weeks before the bristles splayed out. So when it broke the last time I decided to try a Phillips toothbrush. I kept looking at them for months before finally ordering a 9000 diamond clean. I can sum it up in one word WOW. I have a lot of gum recession and my teeth are very sensitive. As a result I haven’t been able to clean my teeth properly and they had a lot of stains on them. From the very first use of my Philips Sonicare 9000 diamond clean my teeth were noticeably cleaner and after a few uses my sensitivity was reduced dramatically. I was able to use the Philips toothbrush on full sonic vibrations right from first use but it is so handy to be able to turn it down if I come across an area that is more sensitive. The brush heads aren’t cheap but it is lasting far longer than the Braun ones ever did and they are more effective. There is a good choice of different brush heads available and the ones that I have bought all connect with the app so that I can track their usage. It’s good that you can see at a glance on the app how many uses there are left on each different brush head..It is very comfortable to hold and it’s not slippery at all. I have dexterity and grip issues and whereas I was forever dropping the Braun I have not dropped my Philips once. I leave it on the charger when not in use so that it is always fully charged but anyone who doesn’t do this will probably find that the battery doesn’t last long enough. In all honesty I wish that I had ditched Braun toothbrushes many years ago and bought a Philips instead. I would recommend this toothbrush without any reservations especially if like me you have sensitivity issues and you are not satisfied with the cleaning of your existing toothbrush. I will be trying a dedicated sensitive brush head very soon with a view of having brush heads for general hygiene, sensitivity and whitening then I can choose the appropriate brush for the job at hand. This toothbrush is the best and I can’t sing its praises highly enough. If you’re in doubt just get this one and you won’t be disappointed.
This review was made for DiamondClean 9000 Series HX9911/88 Special edition sonic electric toothbrush
Date of Use 2026-06-03
This review was made for DiamondClean 9000 Series HX9911/88 Special edition sonic electric toothbrush
Date of Use 2026-06-03
Cuffs
16/07/2026
United Kingdom
Verified buyer
Great brush
It's a great brush. My teeth feel really clean after brushing.
Pros
Great brushing options
Yes, I recommend this product
This review was made for DiamondClean 9000 Series HX9911/89 Special edition sonic electric toothbrush
Date of Use 2026-02-01
Yes, I recommend this product
This review was made for DiamondClean 9000 Series HX9911/89 Special edition sonic electric toothbrush
Date of Use 2026-02-01
Based on a study of over 2600 dental professionals (dentists and hygienists) conducted in the United States, Canada, China, France, Germany, Italy, Japan, Korea, the Netherlands, Switzerland, Spain, Sweden and the United Kingdom in 2023-2024.
in White+ Mode using a leading whitening toothpaste
Vs a manual toothbrush, actual results may vary
as compared to DiamondClean brush head