Deal
Waterpik Cordless Advanced Water Flosser — 40% Off
Seasonal Deal — 40% Off
Discount verified on 2026-08-28. Price may have changed — click to see the current price on Amazon.
Waterpik's Cordless Advanced water flosser (WP-580) is 40% off in Amazon's Labor Day sale — the steepest cut in the event's personal-care corner, and Amazon flagged it as selling fast. It's the ADA-Accepted cordless model: three pressure settings, four tips, a travel bag, and a rechargeable, shower-safe design that solves the counter-clutter and outlet problems of the countertop units. Water flossers are one of those categories where the recommendation is boring and consistent — Waterpik is the brand dentists name — and 20K+ buyers picked this one up in the past month at full price.
Why This Deal Is Worth It: Forty percent off the water flosser brand that's practically synonymous with the category, in its most practical cordless form — discounts this deep on the WP-580 usually only appear at the biggest sale events.
Deal expires: 2026-09-08T06:59:00