If you click on links we provide, we may receive compensation. Shopping Beauty Products Crest 3D Whitestrips Keep My Teeth Pearly White Despite a Diet of Coffee and Tomato Sauce Score them on sale during Prime Big Deal Days By Alyssa Grabinski Alyssa Grabinski Alyssa Grabinski is a celebrity shopping writer for PEOPLE. She’s an expert at finding affordable lookalikes for celebrity-worn styles seen on Oprah Winfrey, Katie Holmes, and Kate Middleton. She also rounds up can’t-miss sales, the best weekend deals, and top-notch beauty buys celebrities are currently using. People Editorial Guidelines Published on October 9, 2024 12:30AM EDT Photo: People / Alexander Huang If something is a teeth-staining food or drink, chances are I probably love it. Coffee? I have at least one if not two medium iced lattes per day. Tomato sauce? I’m Italian, so it’s a given. Chocolate? It’s my vice. So when someone recently asked me how I whiten my teeth, I knew my Crest 3D Whitestrips were working. Bonus: They have more than 68,000 perfect ratings on Amazon and are currently $16 off during October Prime Day. Crest 3D Whitestrips Professional Effects, $30 with Prime Amazon $46 $30 at Amazon The 14 Best Toothpastes of 2024, Tested by Real People In all transparency, they saw me right after I just finished a different pack from the brand. But ever since I moved on to the Crest 3D Whitestrips Professional Effects, which I got last Prime Day, my teeth are whiter and brighter than before. Each strip is made with hydrogen peroxide. When used daily, they will deliver results that you would get if you had an in-person treatment at the dentist. They also have a “no-slip grip,” according to the brand, which I’ve found stays glued in place, even more so when you put them on dry teeth. (When I give my teeth a good wipe before application, the strips do not move.)The strips need to be worn for 45 minutes, while the four freebie express treatments that come in the box need to be worn for one hour. Applying them takes a lot less time, though. Just peel them off the packaging, line them up with your teeth and gums, and stick them on. People / Alyssa Grabinski The 9 Best Teeth Whitening Strips of 2024, Tested and Reviewed There’s likely going to be extra material that needs to be folded over the back of your teeth. But I like to bend the rules a tiny bit, so I cut each strip in half lengthwise. This doubles the number of strips, from 40 up to 80, which is the maximum amount of treatments you should do per year. I’ve also noticed that when I only use half a strip, my teeth are significantly less sensitive afterward. Just make sure to count how many treatments you’ve done — I’ve lost track before. People/Alexander Huang Something else the box won’t tell you? Make sure you finish drinking water or eating before starting a whitening session. It doesn’t say that you can’t do either of those things with the strips on, but I don’t see how you could. It’s also probably not a good idea to voluntarily swallow whitening chemicals. I’m an Amazon Shopping Editor, and These Are the Only October Prime Day Deals You Need to Shop It’s also not difficult to talk while the strips are applied, but it doesn’t necessarily feel like you don’t have them on your teeth, so that’s something else to consider when blocking teeth whitening time on your calendar. Head to Amazon now to get some Crest 3D Whitestrips before they go back to full price. Then keep scrolling to shop more products that will help you stay on top of your oral hygiene. Shop More of the Best Deals at Amazon Prime Day in October Plackers Twin Line Dental Flossers Amazon $4 $3 at Amazon Waterpik Cordless Advanced 2.0 Water Flosser, $60 with Prime Amazon $100 $60 at Amazon Crest 3D White Advanced Luminous Mint Teeth Whitening Toothpaste Amazon $15 at Amazon Oral-B CrossAction Toothbrushes Amazon $18 $14 at Amazon Listerine Total Care Anticavity Fluoride Mouthwash, $14 with Prime Amazon $23 $14 at Amazon See More from PEOPLE Shopping 10 Fashion Gifts You Won’t Believe Are from Walmart — All Under $20 Ugg Boots and Slippers Are Up to 52% Off Ahead of the Holidays, but Only for a Few More Days 10 Thanksgiving-Ready Dresses That Are Just as Comfy as They Are Cute — Starting at $8