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Waterpik Cordless Advanced 2.0 WP-580 Portable Rechargeable Water Flosser for Teeth & Gums vs COSLUS C30

Buy the Waterpik Cordless Advanced 2.0 if you want a proven, dentist-endorsed portable flosser with a waterproof body, a travel bag and a magnetic 4-hour charge. Buy the COSLUS C30 if you want a bigger 300 ml tank, a wider 30-150 PSI range and four modes for less money. The Waterpik is the safer pick for gum health claims; the COSLUS is the better value on paper.

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Waterpik
Waterpik Cordless Advanced 2.0 WP-580 Portable Rechargeable Water Flosser for Teeth & Gums

Waterpik Cordless Advanced 2.0 WP-580 Portable Rechargeable Water Flosser for Teeth & Gums

Choose the Waterpik Cordless Advanced 2.0 if you floss in the shower, travel often, or want the brand with clinical gum-health claims and ADA acceptance.

Pros
  • Clinically proven up to 50% more effective than string floss for gum health
  • Removes up to 99.9% of plaque from treated areas
  • Waterproof body, safe to use in the shower
  • Magnetic 4-hour charge, USB-A cable
  • Comes with 4 tips, tip case, travel bag and travel plug
Cons
  • Only 3 pressure settings

What separates them

Waterpik Cordless Advanced 2.0 WP-580 Portable Rechargeable Water Flosser for Teeth & GumsCOSLUS C30
Pressure range3 pressure settings, no PSI figure published30-150 PSI across 4 modes
Water capacityNot stated in the listing300 ml detachable wide-mouth tank
Modes3 pressure settings4 flossing modes
Shower useWaterproof, may be used in the showerNot stated as waterproof
ChargingMagnetic 4-hour rapid charge, USB-A cableNot stated
Included tips4 tips plus tip storage caseNot stated
Travel kitMicrofiber travel bag and travel water plugNone listed

Price history

  • Waterpik Cordless Advanced 2.0 WP-580 Portable Rechargeable Water Flosser for Teeth & Gums: lowest $84.95 on Nov 1 at Hygiene Direct.
  • COSLUS C30: lowest $19.95 on Nov 1 at Amazon.

Prices at every store

Waterpik Cordless Advanced 2.0 WP-580 Portable Rechargeable Water Flosser for Teeth & Gums

  • AmazonCheck price at Amazon
  • Hygiene DirectCheck price at Hygiene Direct
  • WaterpikCheck price at Waterpik
Prices and history →

COSLUS C30

  • AmazonCheck price at Amazon
  • Best BuyCheck price at Best Buy
  • eBayCheck price at eBay
Prices and history →

Specs compared

SpecWaterpik Cordless Advanced 2.0 WP-580 Portable Rechargeable Water Flosser for Teeth & GumsCOSLUS C30
Pressure—30-150 PSI across 4 modes
Weight—15.04 oz
Dimensions—8.71 x 3.29 x 2.81 in
Capacity—300 ml detachable wide mouth tank
Flossing Modes—4
color—Blue
actual_color—Semi-transparent

Questions and answers

Which is better for gum health?
The Waterpik. It cites clinical proof of up to 50% better gum health than string floss and up to 99.9% plaque removal. COSLUS publishes no clinical figures.
Which has the bigger water tank?
The COSLUS C30, at 300 ml with a detachable wide-mouth tank. Waterpik does not publish a capacity for the WP-580.
Can I use either in the shower?
Only the Waterpik. Its listing states a waterproof design that may be used in the shower. COSLUS makes no waterproof claim.
Which has more pressure settings?
The COSLUS C30, with 4 modes spanning 30-150 PSI. The Waterpik has 3 pressure settings with no published PSI range.
Is the Waterpik worth the extra money?
If you want shower use, a travel kit, 4 tips and clinical gum-health claims, yes. If you mainly want a large tank and adjustable pressure, the COSLUS covers that for less.
Which is easier to travel with?
The Waterpik. It ships with a microfiber travel bag, a travel water plug and a magnetic USB charging cable. The COSLUS lists no travel accessories.
No published PSI range or tank capacity
  • Replacement tips and charging cable are proprietary
  • COSLUS
    COSLUS C30

    COSLUS C30

    Choose the COSLUS C30 if you want a larger detachable tank, more pressure range and four modes at a lower price.

    Pros
    • 300 ml detachable wide-mouth tank is easy to fill and clean
    • Wide 30-150 PSI range across 4 modes
    • Semi-transparent blue body shows water level
    • Compact 8.71 x 3.29 x 2.81 in footprint
    Cons
    • No waterproof or shower-use claim
    • No travel bag, tip case or extra tips listed
    • No clinical plaque or gum-health figures published
    • Heavier at 15.04 oz
    Weight
    Lightweight portable design, weight not stated
    15.04 oz