Strongest 35-percent 40 ml Teeth Whitening Gels

The Rewards Program that Pays for Itself
  • EARN 5 to 40%
    Earn 5% in Club O Rewards on every order & up to 40% on select items.
  • FREE SHIPPING Every Order, Every Day*
    No matter how big or small, your order always ships for free.
    Dedicated customer service and early access to exclusive deals.
    Club O pays for itself, or we make up the difference
Today: $20.99
At other retailer: $35.56 Save $14.57 (41%)
ITEM# 10375877
  • Delivery Estimate

    Select a Product Option to view shipping

    • Product Alerts

      Stay in the know! Choose which alerts you’d like to receive on this product.

    Strongest 35-percent 40 ml Teeth Whitening Gels
    • Wishlists
    • Save for Later


    ITEM#: 10375877

    Get the bright and white smile you always wanted with this Ultimate 35-percent Teeth Whitening Gel. This whitening kit includes 160 treatments.

    These gels are 40-percent stronger than those found in most dental offices and produce results in half the time. Made without animal by-products and containing Kosher-grade glycerin, this product is a safe choice for those with special dietary preferences. These gels are made fresh daily and have a three year shelf life.

    • Number one rated hi-intensity professional strength whitening gel
    • 40-percent stronger than most dentists use
    • Highest quality 35-percent carbamide peroxide
    • Formula reduces tooth sensitivity
    • Optimized pH formula for higher whitening performance
    • Kosher grade glycerin (no animal by-products)
    • Enhanced stabilization of formula for increased whitening performance in half the time
    • Gel is made fresh daily with a three year shelf life
    • Made following US guidelines
    • Includes four huge 10-cc syringes (160 treatments) filled with 35-percent bleaching gel

    The content on this site is not intended to substitute for the advice of a qualified physician, pharmacist, or other licensed health-care professional. The products may have additional information and instructions on or inside the packaging that you should carefully read and follow. Contact your health-care provider immediately if you suspect that you have a medical problem. The use of dietary supplements may not have been evaluated by the Food and Drug Administration and is not intended to diagnose, treat, cure, or prevent any disease or health condition.

    Due to the personal nature of this product we do not accept returns.


    Dimensions N/A
    Materials Plastic, whitening gels
    Model Number 3333-999

    Customer Reviews

    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Stars
    • Tooth Whitening.

      Great product and works really good. Money saver.

      Read More
    • Pearly Whites You can Expect

      As long as you have your dental regiments, you can save bucks. I've used this product and know that I won't have to reorder for at least 6 mos. to 1 year.

      Read More
    • Taste is horrible

      The taste will give you the dry heaves.. I spit the product out...

      Read More
    • Filthyrich

      These are great, work great, don't irritate my gums and the product goes a long way...lasts a long time!

      Read More
    • Burns gums

      was unable to leave on longer than 5 minutes due to severe burning of gums. Going to try and return . I do not recommend

      Read More
    • 35% tooth whitening gel

      I've used this product for about three weeks now, 2-3 times per week. I am very pleased with it's whitening properties - much better than the 7% gel I received from my dentist. I have custom fit trays that my dentist made for me, and so far have not experienced any gum or tooth sensitivity. I've only been leaving the gel on for 15-20 minutes at a time, and taking a couple of days between applications.The instructions that accompany the product are very basic, but it seems with some common sense most anyone would be able to figure it out. Overstock's delivery of the product was, as usual, very quick. I paid over $60.00 for whitening gel from my dentist, which was only a 7% strength and came in four TINY tubes, so this is definitely good value for the money.

      Read More
    • Whitener

      I had purchased a whitening kit previously and could not find my gel refill. This was something I researched to make sure I could find a gel that would work in a timely manner like my previous gel. This gel did exactly that. Within 3 days I could significantly tell a difference in shading. My teeth were not severe. However, the daily coffee and other foods do take their toll on the whiteness level. This took the dullness and the staining of all of that away. I used one tube within a week, using the product nightly. Then I took one week off to cut down on any sensitivity. I did this as a precaution, because I did not experience any irritation. I'm a skeptic so it meant something to me for this to work well enough to write about it. It does a great job, expecially for the price. It is worth it.

      Read More

      I would recommend this product to everyone. I paid my dentist 150.00 for the same product. I saw results in one day. I ordered for myself, everyone at work started asking me about my teeth, so I ordered two more for people at work. You can keep it in the fridg. for up to 3yrs. So I will be about to do touch up whenever I like.

      Read More
    • Great!

      Having retired from being a dental assistant, I knew what to look for in this product. And it was all positive! It did not come with trays, which can be expensive if you don't already have a set (I did). But I found the process of filling the trays easy. All that is needed is a steady and controlled hand. When placing the tray into the mouth, I found using a Q-tip to remove the excess along the gum line worked fine. The solution is very strong so it is important to remove any extra or you will devintely have burning gums. I saw an immediate imporvement after 2 sessions of 1/2 hour each. I don't remember the directions saying anything about not eating or drinking anything for a while after using solution, but it's a good idea not to. Particularly coffee, tea or red wine. This product is definitely worth the money and it gives the results you're looking for.

      Read More
    • Teeth Whitening

      This product works great I noticed a big change in just a few days. I would recommend this to anyone who wanted a quick and easy way to light up their smile!!!

      Read More

    Questions & Answers

    Get your product questions answered right here.
    • Why did you choose this product?

      • was impressed with reviews

      • Price and higher % than I can get at home

      • Stained teeth

      • tried other products that were similar and results were just ok - wanted to try this because you claim it is the Strongest % & fasted product available

      • I've used it before with good results.

      • I use 35 percent gels because they work quicker and give great results.

      • Great price for the product.

      • used it in the past

      • good price

      • For my teeth

      Read more Read less
    • How long do you leave the product on?

      • Thank you for contacting us brody123. If you haven't whitened before I'd start with about an hour, and a few days between sessions. Please let us know if you have any further questions.

      • I leave product on for 3 min. 3 times a week. Tried leaving on for an hour and my teeth became sensitive.

      • Normally 3 to 4 hours seems to work the best.

      Read more Read less
    • Does this product come with instructions that tell you for example how long to keep the trays in (yes i know the trays are not included) and how often to use ect? Thanks :)

      • Hello kepes, Yes this will come with instruction. I think I'm going to order this too! The reviews are really good and its way cheap! Here are some trays too if you need them :) #12907978 Thank you for shopping with us!

      • No!!

      • Mine did NOT come with instructions, but there's not much to it. If you haven't whitened before I'd start with about an hour, and a few days between sessions. After you know what to expect it's easy to keep in longer or use more often, totally up to you.

      • I did not get instructions, but this product is for people who already have had teeth whitening products and have their own trays, thus know how to use it.

      Read more Read less
    • Does this product come with or require the trays?

      • This is gel only and works beautifully!

      • Thank you for your question. Trays are required, and would need to be purchased separately. We have some available listed under Item #: 12907978.

      • Gel only! Hubby and I have had great results with this.

      • No trays come with the product. You must get your own tray.

      Read more Read less

    Shopping Tips & Inspiration

    Shipping & Returns


    Usually leaves our warehouse in 1 business day. *

    Non-Returnable Item Policy:

    This item is not returnable unless the problem you experience is the result of our error.
    More Details

    Shipping Information:

    Our standard shipping method is ground shipping. We also offer expedited shipping for most items. Your final shipping cost and estimated delivery timeframe will be available at checkout.
    Standard shipping details
    Expedited shipping details

    * For your protection, all orders are screened for security purposes. If your order is selected for review, our Loss Prevention Team may contact you by phone or email. There may be a two business day delay to process your order.

    ** Most Oversize orders are delivered within 1-4 weeks. Some orders may take 6 weeks to be delivered.