Waterpik WP-450 Cordless Plus Water Flosser

a Waterpik Flosser


This item is no longer available to buy. Please check the site for current, similar items.

Are you looking for spares or parts for this product? Find them here.

Suitable Spares & Accessories

View all spares and accessories

Key features

  • Dual pressure control system with low for sensitive gums, high for deep cleaning
  • Advanced ergonomic design with non-slip grip
  • Reservoir can be filled without removal
  • Convenient, recharging power supply
  • No batteries needed
  • Easy to store when not in use
  • Tips rotate 360 degrees to reach all areas of the mouth
  • Reservoir capacity is 210ml (7 oz)
  • Pressure range is 45 to 75 psi
  • Two-year warranty
  • Clinically proven up to 50% more effective than traditional dental floss and up to 80% more effective than Sonicare® Air Floss (Model HX8181) for improving gum health
  • Proven in laboratory tests to remove up to 99.9% of plaque from treated areas with a 3-second application
  • Removes bacteria deep between teeth and below the gumline where brushing and traditional flossing can't reach
  • Massages and stimulates gums to improve circulation and keep your gums strong and healthy
  • Can be used with your favourite mouthwash
  • Leaves a clean, fresh sensation


Flossing excellence, cordless convenience

Lightweight, cordless and easy to use, the Waterpik® Cordless Plus Water Flosser makes it easy to maintain healthier gums. It is a great solution for those who prefer the convenience of a cordless electric Water Flosser.

The Waterpik® Water Flosser is clinically proven to be more effective than traditional dental floss and Sonicare® Air Floss (Model HX8181) for reducing plaque and gingivitis.

And the Orthodontic Tip combined with the Water Flosser is clinically proven to be up to 3X as effective as dental floss for removing plaque around braces and other orthodontic appliances.

Want more options?

View the full Waterpik range

Waterpik WP-450 Cordless Plus Water Flosser Reviews

So far so good.

Submitted by Ray on 7 February 2021
4 out of 5

I've had a number of water flossers all seem to have the same problem-- electronic push buttons attached to a PCB. Very quickly the circuits get wet and pack up. The water pik has mechanical switches which I figure will be easier to clean. I'm hoping there are no circuit boards, but I won't know until the time comes to dismantle it, with any luck some time away. My only criticism is that it could be a bit more powerful. So far quite pleased.

Very good product

Submitted by Allan on 20 January 2021
5 out of 5

Very easy too use and does exactly what it says on the tin , would highly recommend this product.

So far so good

Submitted by JS on 12 November 2020
4 out of 5

Bought this item to replace another makers model which failed after less than 3 month, when it refused to recharge. After reviewing various options - picked the Waterpik - and so far am pleased with it. Service and delivery from Shavers very good