Crest 3D White Professional Effects Whitestrips Review

I was sent a pack of Crest 3D White Whitestrips with Advanced Seal No Slip Technology complimentary from Influenster to test and review. I’ve always had a slight yellow tinge to my teeth, so whitening is something I have considered. As a young teen, I asked my dad to buy me something to help, and he grabbed Rembrandt whitening trays. I had to deal with gooey trays in my mouth, and the result was patchy, unevened whitening. Compared with my first whitening experience, these Crest strips are a homerun.

Application and Removal

These strips are easy to apply. You line up the bottom of the strip with your gum, press down for 2-3 seconds to create a seal, wrap around your teeth, and press for another 2-3 seconds on the back, starting with the bottom strip. You want to make sure your alignment is right before you press down. Once in place, these babies aren’t moving! When removing, it’s almost as if they’re rubber-cemented to your teeth. Just a little tugging though, and they come off.


The advanced seal is more so aimed at slip prevention rather than keeping product in. The product foams up around the teeth and consequently up and around the strip. The taste is unoffensive – it almost tastes like coconut water, oddly enough. Even though product does get in your mouth, it’s not much compared to whitening trays and whitening gel. Definitely tolerable.

Advanced Seal No Slip Technology

The strips get an A+ in this department. Once in place, the strips don’t budge whatsoever. I was able to talk with ease. I would compare it to having braces, a retainer, or invisalign in your mouth for the first time and having to learn to talk around it.


Also high marks in whitening! My teeth were a tad whiter after just three days, as promised, but I wasn’t certain until the halfway mark when I compared photos. Although the photos were taken in slightly different lighting, the results are obvious.

Before – Day 1

Midway – Day 12

After 17 days

Side Effects

I did experience some tooth sensitivity on one particular tooth after the first few days. As recommended by the literature that was included with the kit, I stopped use for a few days until the sensitivity subsided. Once I started back up, it didn’t return so I resumed use. The sensitivity never returned.


Crest 3D White whitestrips are widely available – Walmart, Walgreens, you name it. They retail for around $54.99, though I’ve seen them on sale at Walgreens for $42.99. Considering the results, I’d say the $43-$55 dollars is well worth it!

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  • Reply Arabella Lia Montefiore

    I loved these! But can I ask you where I can buy them (a trustworthy site) that will ship them real far? (I live in Europe, Belgium). Thanks for the review, really helped! Are they still white? & Would it help to use Sensodyne toothpaste to reduce the pain? Thank you so so much xox

    December 15, 2012 at 7:57 am
    • Reply Kelsey Reddick

      Hi Arabella! They are definitely still white. I’m not sure who ships internationally that would carry these. Here is a list of places you can find online.

      December 15, 2012 at 9:28 am
  • Reply Manfred

    Having looked at the before, during and after photos is not very convincing. The skin in the first photo is much darker than the last so makes true comparison impossible. I have seen similar “comparisons” from dentist photos where the before shot has all the white UV block on the gums making teeth look more yellow. The after shot is taken without the UV block thus changing the exposure.

    Without a control white card in the photo makes the photos useless.

    February 14, 2013 at 5:31 am
  • Reply Cat

    May I ask you, now that several months have past, how do you feel the whitening now? How long did it last?
    I’m considering purchasing this product but I live in Europe and with the shipping costs, this will be quite an investment for me. I hope it’s worth it.
    Also, how long did it take for you to have the normal sensitivity in your teeth?

    Thanks for your answer 🙂 xx

    April 3, 2013 at 7:57 pm
    • Reply Kelsey Reddick

      Hi Cat,
      I was very pleased with the results. I am maintaining my white smile by using a whitening tooth paste. My teeth are still whiter than when I started out, but not as brilliantly white as when I finished. I experienced sensitivity after just a few days, but once I stopped using them the sensitivity went away almost immediately. When I started using them again the sensitivity did not return. If the strips are going to cost a lot to ship, you may want to look into getting your teeth professionally whitened.

      April 4, 2013 at 8:01 pm
  • Reply C.weetie

    I’m gonna try these ones today for the first time. Hope it really works 😀 love the review. very complet. And you have a really nice way to talk and explain 🙂

    February 10, 2014 at 2:01 pm
  • Reply Astonia Fondren

    Hello I was wondering how long do you keep the professional strips on? Thanks

    October 25, 2014 at 5:47 pm
  • Reply Andrew Schottenheimer

    The 12th day is a little warmer than the 17th, and the first day is warmer than the 12th.

    It’s a little deceiving, and one of the oldest tricks in the before/after book. Maybe unintentional, but still.

    May 25, 2015 at 1:17 pm
    • Reply Kelsey Reddick

      Thanks for your feedback, Andrew. I am a photography newb, but I’m getting better.

      May 25, 2015 at 1:57 pm
  • Reply Joce

    Hi, I have been looking into these for quite a while now.. Did they ruin your enamel? That’s one of my biggest worries. Also, seeing how you have done this somewhat around this time in 2012 are your teeth still white? What whitening toothpaste do you use, and do you use a specific mouthwash as well? Sorry for all the questions. I think your teeth look very nice. 😀

    November 20, 2015 at 9:41 pm
    • Reply Kelsey Reddick

      Hey Joce! Definitely ask your dentist about your enamel concerns. My teeth are not still white from this 3 years later, whitening is always a temporary solution. I don’t use a whitening toothpaste or a whitening mouthwash, but Crest makes them if you’re interested.

      November 30, 2015 at 9:56 pm
      • Reply Medayu Bestari Praja

        Hey Kelsey, I just watched your review on YouTube and just stranded here. I want to ask a question then, so you did use the Crest Whitestrips only? I mean, you didn’t have applied the Crest toothpaste after all and you can have any regular toothpaste? Because I’m interested in purchasing one, but they have 2 separated products so I need your comment, which one I should purchase or both. Thank you.

        x, Dayu
        Medayu Bestari Praja recently posted…A Letter to Mr. SpacemanMy Profile

        November 13, 2016 at 4:15 am
        • Reply Kelsey Smith

          I believe I just used the strips and then I used the toothpaste after to try and keep my teeth white.

          November 13, 2016 at 11:34 am

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