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Amazon.com > > Oral Care > Teeth Whitening
This report was last updated 7/19/2023. Jump to Report Card Jump to Report Card Report Info: Last Updated: Jul 19, 2023 Why isn't the adjusted rating lower? Note: We only analyze "reviews" and ignore one-tap "ratings". *This is only a Preliminary Report
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Warn Overall Grade
FAIL Deleted Reviews
FAIL Phrase Repetition
FAIL Overlapping Review History
PASS Rating Trend
PASS Unverified Purchases
PASS Word Count Comparison
PASS Suspicious Reviewers
PASS Reviewer Ease
PASS Brand Repeats
PASS Incentivized Reviews
N/A Reviewer Participation
After just one overnight application my teeth were whiter. This ... [Go to full review]
Jul 15, 2023
100%
TRUST
- Unverified Purchaser
- Never-Verified Reviewer
- Easy Grader (avg. rating: 5.0)
1/5
Beyond unsatisfied.It literally does nothing and is a burden to ... [Go to full review]
Sep 1, 2020
0%
TRUST
- Verified Purchaser
- Contains repetitive phrases(show)
Reviewer data not yet gathered.
Report inaccurate data
Fail Deleted Reviews
We discovered a total of 57 deleted Reviews for this product, with an average rating of 4.3. Even though deleted reviews don't affect the average rating, the fact that action was taken to delete reviews raises some red flags about the integrity of the reviews for the product as whole.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
- We don't have a magic ability to collect every single deleted review; we can only identify reviews as deleted if we collect them on one date and then notice they are no longer visible on a subsequent date.
- We have no information on reviews that were never published in the first place.
- We also don't know why these reviews were removed. It could be action from the platform, personal decision by the review author, part of an entire account closure, even some data error on our part, etc.
Read more about our Deleted Reviews test.
Fail Phrase Repetition
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.
Common Phrases in Titles:
~100% of reviews
(3.0/5)
~17% of reviews
(4.0/5)
~27% of reviews
(5.0/5)
~17% of reviews
(3.0/5)
~33% of reviews
(1.0/5)
~7% of reviews
(2.0/5)
Approximately 55% of reviews use substantial repetitive phrases between them. These reviewers have rated this product an average of
2.7while reviews without substantial repetitive phrases rated this product an average of
3.4. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.
from reviews with substantial repetitive phrases
from reviews without substantial repetitive phrases
2.7
3.4
Read more about our Phrase Repetition test.
Fail Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
<10% also reviewed:
Zenith Industries ZN700001 Trim Puller , Black by Zenith Industries
<10% also reviewed:
by Campus Colors
Less than approximately 10% of reviewers have substantial overlapping product review history. These reviewers have rated this product an average of
5.0while the reviewers who have a more unique product review history rated this product an average of
2.8. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.
from reviewers with substantial overlapping history
from reviewers without a substantial overlapping history
5.0
2.8
Read more about our Overlapping Review History test.
Pass Rating Trend
We didn't notice any signals that would indicate reviews were created unevenly over time.
Read more about our Rating Trend test.
Pass Unverified Purchases
135
of the
50,756total reviews for this product are unverified purchases. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
from unverified purchasers
from verified purchases
3.0
3.0
Unverified purchases may be the result of Kindle Unlimited readers, buyers who didn't pay full price, or reviewers who did not purchase the product at Amazon. Read more about our Unverified Purchases test.
Pass Word Count Comparison
- <10%
- Have an overrepresented word count
We didn't find any review word count groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Word Count Comparison test.
Pass Suspicious Reviewers
One-Hit Wonders
We didn't detect a substantial amount of One Hit Wonders.
Never-Verified Reviewers
Less than approximately 10% of reviewers have never written a verified purchase review. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
from never-verified reviewers
from reviewers with at least one verified purchase review
5.0
2.9
Take-Back Reviewers
Approximately 20% of reviewers have had at least one of their past reviews for another product deleted. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
from take-back reviewers
from reviewers without previously deleted reviews
2.7
3.0
Single-Day Reviewers
We didn't detect a substantial amount of Single-Day Reviewers.
Pass Reviewer Ease
The ease score is the average rating for all reviews that a given reviewer submits. The average ease score for reviewers of this product is 3.4, while the average ease score for reviewers in this category is 4.3.
3.4 Product's Average Ease Score
4.3 Category's Average Ease Score
3.4
4.3
Read more about our Reviewer Ease test.
Pass Brand Repeats
Brand Repeaters
We didn't detect a substantial amount of Brand Repeaters.
Pass Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
- <10%
- Admitted to receiving an incentive
We didn't detect any reviews that used language indicating they were incentivized.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.