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Hyaluronic Acid Serum for Skin 100% Pure Anti Aging Serum Intense Hydration Moisture Non greasy...
More product info
From Cosmedica Skincare
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Top products in Serums with authentic reviews:
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Pass Overall Grade
FAIL 
Deleted Reviews
Deleted ReviewsFAIL Unverified Purchases
Unverified PurchasesFAIL Suspicious Reviewers
Suspicious ReviewersWARN Rating Trend
Rating TrendPASS Word Count Comparison
Word Count ComparisonPASS Phrase Repetition
Phrase RepetitionPASS Overlapping Review History
Overlapping Review HistoryPASS Reviewer Ease
Reviewer EasePASS Brand Repeats
Brand RepeatsPASS Incentivized Reviews
Incentivized ReviewsN/A Reviewer Participation
Reviewer Participation
Most Trusted Reviews
Being sensitive to scents and most products, it is challenging ... [Go to full review]
Jan 8, 2023
100%
TRUST
TRUST
-
Verified Purchaser
-
Take-Back Reviewer (5 deleted Reviews; avg. rating: 4.2) -
Critical Reviewer (avg. rating: 3.8)
Easy Grader (avg. rating: 5.0)
Overlapping Review History: reviewed 2 of 9 top products
Brand Repeater (2 of 31 reviews for this brand; avg rating: 5.0)
Least Trusted Reviews
Fateme Hooshmand [Go to full review]
Mar 9, 2023
0%
TRUST
TRUST
-
Unverified Purchaser -
Created on a high volume day
-
One-Hit Wonder -
Never-Verified Reviewer -
Critical Reviewer (avg. rating: 4.0)
Contains repetitive phrases 
Overrepresented Participation (posted 12 Reviews)
Analysis Details
Fail Deleted Reviews
Deleted Reviews
We discovered a total of 465 deleted Reviews for this product, with an average rating of 4.6. 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.
4.6 average rating of deleted reviews
Fail Unverified Purchases
Unverified Purchases
279 of the 38,566 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 3.0 while the verified purchasers have rated this product an average of 4.3. 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.
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.
Fail Suspicious Reviewers
Suspicious Reviewers
Never-Verified Reviewers
Less than approximately 10% of reviewers have never written a verified purchase review. The Never-Verified Reviewers have rated this product an average of 2.8 while the reviewers who have written at least one verified purchase review rated this product an average of 4.3. 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.
Take-Back Reviewers
Approximately 45% of reviewers have had at least one of their past reviews for another product deleted. While this is more Take-Back Reviewers than we'd expect to see, it does not appear to have a significant impact on the overall rating.
Warn Rating Trend
Rating Trend
It appears that several reviews were created during just a short period of time.
Read more about our Rating Trend test.
Read more about our Rating Trend test.
Pass Word Count Comparison
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.
Read more about our Word Count Comparison test.
Pass Phrase Repetition
Phrase Repetition
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.
Common Phrases in Reviews:
~2% of reviews
(5.0/5)
(5.0/5)
~2% of reviews
(5.0/5)
(5.0/5)
~2% of reviews
(3.0/5)
(3.0/5)
Less than approximately 10% of reviews use substantial repetitive phrases between them. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Overlapping Review History
Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
<10% also reviewed:
Karen's Naturals Organic Just Berries... by Karen's Naturals
<10% also reviewed:
Unique Industries Decoration Party Supply, 81ft,... by Unique Industries
<10% also reviewed:
Kaytee Nut and Fruit Blend Stand Up Bag, 5-Pound by Kaytee
<10% also reviewed:
Omiera Labs Acne Treatment, Acne Scars Treatment,... by Omiera
<10% also reviewed:
Foxbrim Ultimate Renewal Scar Cream - For Stretch... by
<10% also reviewed:
Kale Krunch, Quite Cheezy, 2.2 Ounce by Alive & Radiant Foods
<10% also reviewed:
TruSkin Vitamin C Serum for Face – Anti Aging... by TruSkin Naturals
<10% also reviewed:
Vital Proteins Collagen Pills Supplement (Type I,... by Vital Proteins
<10% also reviewed:
Amazon Basics Cotton Hand Towels by Amazon Basics
Approximately 15% of reviewers have substantial overlapping product review history. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Reviewer Ease
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 4.2, while the average ease score for reviewers in this category is 4.3.
4.2 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Brand Repeats
Brand Repeats
Brand Repeaters
Less than approximately 10% of reviewers have reviewed other products for this brand. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Incentivized Reviews
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.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.