- Crest 3D Whitestrips Professional Effects are currently 35% off, meaning they're just as cheap as they were during Amazon Prime Day 2025.
- The Good Housekeeping Institute has tested different versions of Crest's teeth-whitening products—and our Beauty Lab experts have given them high scores in testing.
- Like all Amazon sales, this deal will only be live for a limited time.
Amazon Prime Day comes and goes—and with it comes fleeting sale prices limited-time deals. But if you missed out on the beloved Crest Whitestrips discount, you're in luck.
Crest 3D Whitestrips Professional Effects is back on sale for 35% off, making the the entire Professional Effects set is on sale for $30. That's exactly how cheap it was during Prime Day last month, per our previous coverage.
There's no question that Good Housekeeping editors are fans of the kit—actually, several staffers admit they often shop Crest 3D Whitestrips during sale events like Prime Day. Plus, Beauty Lab experts at the GH Institute approve of them, too.
In fact, the Beauty Lab has tested various Crest teeth-whitening products in the past and continues to recommend them. Our Lab pros named the Crest 3D Whitestrips Professional Express White + Whitening Light our best LED light teeth-whitening product for home use, noting that in just 19 days, it whitened testers' teeth 2.6 shades on average.
What's more, our Beauty Lab pros called the brand's 3D White Daily Whitening Serum our best overall at-home teeth-whitening product—and 100% of testers agreed that the product removed surface stains on their teeth.
As all Amazon sales and discounts go, we don't know when this deal will end. But we know for sure that it's one actually worth the markdown—so take advantage while you have the chance.
