Crest 3D Whitestrips See Up to 43% Off Ahead of October Prime Day
Amazon’s October Prime Big Deal Days run Oct. 7–8 with Prime membership required, featuring Crest whitening kits and other deals ahead of the holiday shopping season.

Shoppers can save on Crest 3D Whitestrips ahead of Amazon's October Prime Day, with discounts reaching up to 43% on select whitening products as part of Prime Big Deal Days. The two-day event runs Oct. 7 at 12:01 a.m. PT through Oct. 8 at 11:59 p.m. PT, and deals are available to Prime members only.
A highlighted offer is the Crest 3D Whitestrips Professional Effects + LED Light Teeth Whitening Kit. The kit includes twenty whitening treatments and an LED light, with each treatment covering both the upper and lower teeth for full coverage. It uses a hydrogen peroxide formula that one note describes as among the highest concentrations available for over‑the‑counter whitening, with claims of whitening up to 34 shades. This setup is marketed as delivering professional-level whitening at home.
Prime Big Deal Days is Amazon's fall counterpart to the mid-year Prime Day, a two‑day window that spotlights discounts across electronics, home goods, toys and other essentials in the lead‑up to the holiday shopping season. The sale runs from Oct. 7 at 12:01 a.m. PT to Oct. 8 at 11:59 p.m. PT. Prime membership is required to access the deals, and shoppers can start a 30‑day free trial if they are not already Prime members.
Beyond Crest, the event is positioned as a chance to stock up on household basics and gift-worthy items with Black Friday–level discounts on many popular products. As with any online sale, prices can change and some offers may expire, so shoppers should act quickly.
For consumers weighing whitening options, at‑home kits offer convenience and potential savings versus in‑office visits, which can cost hundreds of dollars per session. Crest Whitestrips apply the same hydrogen peroxide-based formula used by many dentists, but in a home setting that fits into daily routines.

Deal watchers should monitor the Prime Big Deal Days hub and retailer pages for updates, as promotions can change and availability may vary by region. Prime members who want to take advantage of the Crest offers should prepare to act quickly during the two-day window.