Up to 43% off Crest 3D Whitestrips

It’s time to get a winning smile without handing over your entire week’s paycheck to the dentist. Crest 3D Whitestrips are on sale ahead of October Prime Day, making now the perfect time to grab professional-level teeth whitening at home.

While in-office whitening can easily cost hundreds of dollars, Crest Whitestrips give you the same powerful hydrogen peroxide formula that dentists use, all from the comfort of your own home. Save time and money? Don’t mind if we do.

With the no-slip grip strips staying securely in place, you can whiten your teeth while going about your day, making Zoom calls, sipping water, and even catching up on the latest season of The Morning Show.

This is just one of the top early finds ahead of Prime Big Deal Days, happening Tuesday, Oct. 7, at 12:01 a.m. PT through Wednesday, Oct. 8. Remember, you need to be a Prime member to snatch up these savings, so don’t wait to get your hands on this household lifesaver.

Achieve a dazzling smile with Crest 3D Whitestrips, designed to deliver professional-level whitening at home. With the highest hydrogen peroxide concentration available, these strips can make your teeth up to 34 shades whiter, making them perfect for weddings, special events, or everyday confidence.

Each kit includes one Light and twenty treatments, with each treatment providing an upper and lower strip for complete coverage, delivering a brighter, more radiant smile you’ll love to show off.

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Your Prime Big Deal Days FAQs, answered

What is Prime Big Deal Days?

This annual Amazon sale — which we like to call October Prime Day — is similar to the well-known July event: it’s a two-day blow out shopping event with deep discounts on bestsellers and everyday essentials. But the timing of this sale makes all the difference; shoppers can also score pre-Black Friday deals on top-rated toys and sell-out-risk gifts before the holiday rush.

How long does Prime Big Deal Days last?

Amazon’s fall Prime Day event only lasts two days. This sale starts on Tuesday October 7 at 12:01 a.m. PT and runs through Wednesday October 8 at 11:59 p.m. PT.

When does Prime Big Deal Days end?

Prime Big Deal Days 2025 ends on Wednesday October 8 at 11:59 p.m. PT, so east-coasters have until about 3 a.m. on October 9 their time to shop the deals.

Do you have to be an Amazon Prime member to shop?

Prime Big Deal Days is a member-exclusive sale event. Interested shoppers can grab a 30-day free trial to try Prime, and its many benefits, with no strings attached.

Prime Day vs. Prime Big Deal Days: What’s the difference?

Already familiar with July Prime Day? Then you’ll love Amazon’s fall version! Like its summer spectacular sale, Amazon’s Prime Big Deal Days offers major discounts for 48 hours, but with a bigger focus on holiday gifts, toys and tech to shop ahead of Black Friday and Cyber Monday.

What are the best deals?

From reporting on Amazon sales for years, we can tell you for certain that October Prime Day is the ideal period to stock up on household essentials, score great deals on gift-worthy items and toys, take advantage of Black Friday-level discounts on tech and appliances, refill your skincare empties, and comb through the massive catalog of Amazon best-sellers.

Is it worth it?

We certainly think so! October Prime Day is a great chance to score Black Friday-worthy deals on thousands of best-sellers, including everything from big-ticket tech to Post reader-favorite trash bags. Our team diligently sorts through all the offers to find you the very best items to grab on sale.

When is the next Prime Day?

Already wondering when Amazon’s next Prime Day is? Prime Day takes place in July each year, so it’s safe to assume it will take place in mid-July 2026 — similar to previous years. Can’t wait to shop more Amazon deals? Look out for Amazon’s Black Friday sales to kick off the holiday season in November.

Don’t miss Post Wanted’s around-the-clock coverage. Click here to find all of the best deals.

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For over 200 years, the New York Post has been America’s go-to source for bold news, engaging stories, in-depth reporting, and now, insightful shopping guidance. We’re not just thorough reporters – we sift through mountains of information, test and compare products, and consult experts on any topics we aren’t already schooled specialists in to deliver useful, realistic product recommendations based on our extensive and hands-on analysis. Here at The Post, we’re known for being brutally honest – we clearly label partnership content, and whether we receive anything from affiliate links, so you always know where we stand. We routinely update content to reflect current research and expert advice, provide context (and wit) and ensure our links work. Please note that deals can expire, and all prices are subject to change.

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