Crest 3D Whitestrips Professional Effects — 22 Treatments

Condition: Used - Good. Fully functional with normal wear. Visible cosmetic wear.

Crest 3D Whitestrips Professional Effects deliver professional-level whitening at home. This kit includes 22 treatments — 20 standard and 2 bonus — for a complete whitening regimen. The outer box shows visible cosmetic wear from handling and return shipping. All individual strip packets are present and sealed, as shown in the product photos.

Crest is the #1 dentist recommended at-home whitening brand. These whitestrips use the same enamel-safe ingredient that dental professionals rely on. The formula is proven to whiten teeth up to 19 levels in just 22 days. That level of whitening is comparable to many in-office treatments. You get professional results without a professional price tag. Each treatment pouch contains one upper strip and one lower strip. The strips are designed to flex and conform to your teeth. Advanced Seal Technology holds each strip firmly in place. You can talk, drink water, and go about your day during treatment. The no-slip grip ensures full contact with the tooth surface throughout the full application time.

Using Crest 3D Whitestrips is a simple three-step process. First, peel each strip from its backing liner. Second, apply the gel side to your front teeth and align with the gumline. Third, fold the strip over and press to secure, then wear for 45 minutes. After time is up, peel from the corner and pull gently across for easy removal. Rinse or brush to remove any remaining gel. For the bonus treatments, wear for 60 minutes to boost your final results. The entire 22-day regimen is straightforward and easy to fit into a daily routine. Consistent daily use is the key to achieving the full 19-level whitening result. Results can be visible as early as the first few days of treatment.

The whitening ingredient in these strips is hydrogen peroxide — the same active agent dentists use. It safely breaks down surface stains and deeper discoloration on natural teeth. Coffee, tea, red wine, and tobacco stains respond especially well to this treatment. The enamel-safe formula has been clinically tested and approved for regular home use. Crest's formula does not weaken or thin tooth enamel with proper usage. Some users may experience mild, temporary tooth sensitivity during the regimen. This is normal and typically resolves within a couple of days of completing treatment. The strips are not intended for use on caps, crowns, veneers, fillings, or dentures. Always consult your dentist before starting whitening if you have recent dental work. Those under 12 years of age should not use this product.

This kit is an excellent value for anyone seeking a brighter smile on a budget. Buying open-box means you get the same full product content at a lower cost. Every individual strip packet is factory-sealed, as visible in the photos. The outer box has cosmetic crushing and creasing along the edges and corners. The strips inside are completely unaffected by the box condition. This is a practical, cost-effective way to access a premium whitening kit. Crest backs this product with a 100% satisfaction guarantee. The best-by date printed on the package is 2027-07-01, giving you ample time to complete the full regimen. Store the kit in a cool, dry place away from direct sunlight. Keeping the strips at room temperature preserves the gel's effectiveness.

Crest 3D Whitestrips have been a market leader in at-home whitening for over two decades. The Professional Effects line sits at the top of the Crest whitening range. It is engineered specifically for people who want results closest to an in-office treatment. The Advanced Seal Technology was developed to address one of the biggest complaints about older strip products. Older strips would slip, slide, and lose contact with teeth mid-treatment. The new no-slip grip eliminates that frustration entirely. The strips are thin, flexible, and virtually invisible once applied. You can wear them in the morning while getting ready or in the evening before bed. The flexibility makes it easy to maintain the habit every single day. Habit consistency is directly tied to achieving the best whitening outcome. Learn more about the science of tooth whitening on Wikipedia's Tooth Whitening article.

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Frequently Asked Questions

Question 1: Are all the strip packets included and intact?

Answer 1: Every individual strip packet in this kit is factory-sealed and accounted for, as clearly shown in the product photos. The outer box has cosmetic damage from return shipping, but none of that affects the contents inside. All 22 treatment pouches are present and ready to use.

Question 2: Are these whitestrips safe for sensitive teeth?

Answer 2: Crest formulates these whitestrips to be enamel-safe for the vast majority of users. Some individuals experience mild, temporary tooth sensitivity or gum discomfort during whitening, which is a well-documented and normal response. If sensitivity becomes significant, Crest recommends pausing use for two to three days and then resuming, or consulting your dentist for personalized guidance.

Question 3: How long does it take to see whitening results?

Answer 3: Many users begin noticing a difference within the first few days of daily use. The full regimen is designed to deliver results up to 19 levels whiter over 22 days of consistent treatment. Individual results can vary based on the original shade of your teeth and the types of stains being treated.

Question 4: Will the strips whiten dental crowns, veneers, or fillings?

Answer 4: Crest 3D Whitestrips are designed to work exclusively on natural tooth enamel. Dental restorations such as crowns, veneers, caps, fillings, and dentures will not respond to the hydrogen peroxide whitening gel. If you have restorations in your smile zone, consult your dentist before starting a whitening regimen to set realistic expectations.

Question 5: What is the best-by date on this specific unit?

Answer 5: The lot code label on this unit shows a best-by date of 2027-07-01, as visible in the product photos. This gives you more than two years to complete the whitening regimen at your own pace. Storing the strips in a cool, dry location will help maintain the gel's potency through that date.

Crest 3D Whitestrips remain one of the most trusted names in at-home whitening. The Professional Effects line uses the same enamel-safe hydrogen peroxide ingredient that dental offices use. Getting this level of whitening power in a strip format is what makes the product so popular. The convenience of daily 45-minute treatments fits into almost any schedule. This open-box unit is a smart buy for anyone who wants a premium whitening experience at a discount. All 22 treatment packets are sealed and ready to go. The cosmetic wear on the outer box is purely superficial — the strips inside are the product, and they are intact. Crest's satisfaction guarantee also provides additional peace of mind for first-time buyers.

At-home teeth whitening is one of the fastest-growing segments in personal care. More consumers are choosing effective, enamel-safe solutions over expensive dental visits. Crest 3D Whitestrips Professional Effects sit at the top of that market. The combination of no-slip grip technology and a proven whitening formula makes this kit stand out. Whether you have a big event coming up or simply want a brighter everyday smile, this kit delivers. Pick up this open-box value today and start your whitening journey.