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The key to always being selfie-ready? A brighter smile, duh — and with this deal, it could be yours for even less. And, no dentist’s appointment is necessary.
Amazon Prime Day 2026 has officially arrived, bringing thousands of the deepest discounts of the year on all of the must-haves on your shopping list. And, among the best deals are some of the most popular (and dentist-approved) at-home teeth whitening kits, with discounts of up to 40% off.
Shoppers rave that Crest 3D Whitestrips are worth the investment even at full price, which makes this rare Prime Day discount an even sweeter reason to stock up. More than 70,000 shoppers purchased them in the past month alone, so you won’t want to wait too long to grab your kit. Prime Day runs from June 23 to June 26, giving Prime members just a few days to take advantage of the savings.
How We Find the Real Deals
Here at The Post, we don’t just diligently fact-check to call out fake news — we also relentlessly price-check to get you inflation-beating bargains you can trust. Before we recommend a single Prime Day purchase, our experienced bargain hunters put every “deal” through our price-checking gauntlet:
- The Background Check: We use hardcore tracking tools like CamelCamelCamel, Keepa and Amazon’s own Alexa to audit price history, ensuring mega sales aren’t just regular prices in disguise.
- The Retail Rivalry: We diligently cross-reference competitors like Walmart and Target to guarantee you actually see the lowest price on the web.
- And We’re Live: We track real-time trends and update our live coverage 24/7, keeping pace with shopper needs and retailer fluctuations.
The viral $30 Crest Kit includes 22 professional whitening treatments and, according to the brand, can help users “achieve up to 19 levels whiter teeth.” Reviewers seem to agree, with thousands raving about their “impressive” before-and-after results.
Crest 3D Whitestrips Professional Effects
Said to remove up to 15 years of stains, these best-selling whitening strips offer an easy way to brighten your smile from your own home. No pricey dentist appointment necessary.
The formula combines hydrogen peroxide, a dentist-trusted whitening ingredient, with a specially designed enamel-safe formula that’s gentle on teeth and gums, helping reduce irritation.
“I decided to try Crest 3D White Strips, and I was genuinely impressed with how well they worked,” one reviewer raved. ” After just a few uses, I started noticing a visible difference in the brightness of my teeth, and by the end of the treatment, my smile looked significantly whiter.”
To use them, simply apply a strip to your upper and lower teeth, leave it on for 30 minutes, and remove. For best results, the brand recommends repeating the process daily for three consecutive weeks.
Your Amazon Prime Day FAQs, answered
What is Amazon Prime Day and when is it?
Prime Day is Amazon’s biggest sale of the year, offering deep discounts on bestsellers and everyday essentials. This year’s event runs from Tuesday, June 23 at 3 a.m. ET through Saturday, June 27 at 3 a.m. ET.
How long is Prime Day?
This year, shoppers can take advantage of four days of Prime Day deals: Tuesday, June 23 at 3 a.m. ET through Saturday, June 27 at 3 a.m. ET.
What’s new about Prime Day in 2026?
In addition to pushing up the sale to June, Amazon is including several new programs and promotions, including:
- Today’s Big Deals program: New daily discounts up to 50% off or more
- New deals dropping as often as every five minutes during the sale
- Prime members gain access to exclusive travel deals
- Prime members who spend $15 or more on a qualifying online grocery order have a chance to win free groceries for a year
- Prime members who set up a deal alert with Alexa have a chance to win a $1,000 Amazon gift card
- Through June 26, Prime members can get a large pepperoni or cheese pizza from Little Caesars for $5
- Through June 26, Prime members who purchase a new car through Amazon Autos get a $1,500 Amazon gift card
Do you have to be an Amazon Prime member to shop?
Prime Day and all its amazing discounts are exclusively available to Prime members. However interested shoppers can grab a 30-day free trial to try Prime, and its many benefits with no strings attached, and gain access to exclusive deals and the convenience of fast, free shipping.
What are the best deals?
From reporting on Amazon sales for years, we can tell you for certain that Prime Day is the ideal time to stock up on beauty and skincare staples, score big-ticket tech for less, bestselling vacuums, and comb through the massive catalog of Amazon best-sellers. Plus, since this year’s sale runs before the Fourth of July Americana-themed deals and summer hosting essentials.
Is it worth it?
We certainly think so! Prime Day is a great chance to score deals on thousands of best-sellers, top tech and appliances and every day essentials. Our team diligently sorts through all the offers to find you only the very best items to grab on sale.
When is the next Prime Day?
Already wondering when Amazon’s next Prime Day is? We expect Amazon’s October Prime Big Deal Days sale event to return in fall 2026. Follow Post Wanted’s around-the-clock coverage, and you’ll be the first to know about headline-worthy sales. Click here to find all of the best deals.
Why Trust Post Wanted by the New York Post
This article was written by Miska Salemann, New York Post Commerce Writer/Reporter. As a health-forward member of Gen Z, Miska seeks out experts to weigh in on the benefits, safety and designs of both trending and tried-and-true fitness equipment, workout clothing, dietary supplements and more. Taking matters into her own hands, Miska intrepidly tests wellness products, ranging from Bryan Johnson’s Blueprint Longevity Mix to the viral Oura Ring to Jennifer Aniston’s favorite workout platform – often with her adorable toddler by her side. Before joining The Post, Miska covered lifestyle and consumer topics for the U.S. Sun and The Cannon Beach Gazette.
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