Philips Sonicare DiamondClean 9000 Special Edition HX9911/88

Philips Sonicare DiamondClean 9000 Special Edition (HX9911/88)

The DiamondClean 9000 is a premium Sonicare, and this Special Edition comes in dark blue with a travel case and a charging base and puck. It offers four brushing modes (Clean, Deep Clean+, Gum Health and White+) and works with the Sonicare app. Philips says it delivers 62,000 sonic pulses a minute.

What stands out

• Four modes: Clean, Deep Clean+, Gum Health and White+, so you can match the brushing to what you want that day.
• Whitening focus: Philips claims surface stains are removed for whiter teeth in 3 days. That is a manufacturer claim, so treat it with some caution.
• App support: the Sonicare App helps you choose the right mode and intensity.
• C3 Premium Plaque Control head: one is included. Philips claims up to 10x more plaque removal than a manual toothbrush.
• In the box: the brush, one head, a travel case, and a charger base and puck. It has a UK two-pin bathroom plug, and Amazon notes packaging may vary.

Who it suits

It suits people who want a premium brush with whitening and gum-health modes and are happy to use an app. If you only want a reliable clean, the cheaper 2100 or 4100 Series do the basics for much less.

Reviews and the discount

Its rating is 3.9 out of 5 from 935 reviews, noticeably lower than the cheaper Sonicare models, so read recent reviews before buying. Amazon showed £104.99 against a strikethrough of £299.99 on 13 November 2026. Sonicare list prices are rarely what these brushes sell for, so the real saving is smaller than 65 percent. It is a limited-time Black Friday deal, so check the live price.