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Amazon.com > Beauty & Personal Care > Hair Care > Shampoo & Conditioner > Shampoo & Conditioner Sets
Joico Color Endure Violet Shampoo and Conditioner Duo 10 Ounce
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From Joico
This report was last updated 10/7/2018.
Refresh the report to view the most up-to-date data available:
Refresh the report to view the most up-to-date data available:
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Report Info:
Note: We only analyze "reviews" and ignore one-tap "ratings".
Top products in Shampoo & Conditioner Sets with authentic reviews:
Report Card
Pass Overall Grade
FAIL Suspicious Reviewers
WARN Deleted Reviews
WARN Reviewer Participation
PASS Rating Trend
PASS Unverified Purchases
PASS Word Count Comparison
PASS Phrase Repetition
PASS Overlapping Review History
PASS Reviewer Ease
PASS Brand Repeats
PASS Incentivized Reviews
Most Trusted Reviews
I love the shampoo and the conditioner is just ok. ... [Go to full review]
Jan 13, 2015
100%
TRUST
TRUST
- Verified Purchaser
- Overrepresented word count (24 words)
- Take-Back Reviewer (3 deleted Reviews; avg. rating: 3.7)
- Brand Repeater (2 of 51 reviews for this brand; avg rating: 5.0)
- Easy Grader (avg. rating: 4.6)
Least Trusted Reviews
We couldn't find any low-quality reviewsAnalysis Details
Fail Suspicious Reviewers
Take-Back Reviewers
25 of the 135 reviewers have had at least one of their past reviews for another product deleted. This is an excessively large percentage of Take-Back Reviewers which may indicate unnatural reviews.
Warn Deleted Reviews
We discovered a total of 4 deleted Reviews for this product, with an average rating of 5. 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.
Warn Reviewer Participation
-
- 76%
- From reviewers with an overrepresented participation
We see the following 3 participation groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 103 reviewers (or 76%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass Rating Trend
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- 0%
- Created on high-volume days
We counted 135 reviews for this product over the span of 2,361 days, an average of 0.1 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 2 or fewer reviews on any given day. We didn't find any days exceeding this threshold.
Read more about our Rating Trend test.
Read more about our Rating Trend test.
Pass Unverified Purchases
8 of the 135 total 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.
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
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- 24%
- Have an overrepresented word count
In the graph above, we can see the distribution of review word counts for this product and the expected distribution for this category. We see the following 1 group with a statistically significant greater concentration than what we'd expect to see:In total, we found that 32 reviews (or 24%) are within an overrepresented word count group. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass 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:
Show MoreShow Less
5 reviews
(4.2/5)
(4.2/5)
2 reviews
(4.5/5)
(4.5/5)
2 reviews
(5.0/5)
(5.0/5)
2 reviews
(4.5/5)
(4.5/5)
2 reviews
(2.0/5)
(2.0/5)
2 reviews
(4.0/5)
(4.0/5)
2 reviews
(4.5/5)
(4.5/5)
Common Phrases in Titles:
2 reviews
(5.0/5)
(5.0/5)
3 reviews
(3.7/5)
(3.7/5)
2 reviews
(5.0/5)
(5.0/5)
11 of the 135 total reviews for this product 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
Reviewers of this product have ALSO reviewed the following products:
4% also reviewed:
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2% also reviewed:
NYX Single Eye Shadow by NYX
2% also reviewed:
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2% also reviewed:
GREENIES PILL POCKETS Capsule Size Natural Dog... by Greenies
2% also reviewed:
CeraVe Eye Repair Cream | Under Eye Cream for... by CeraVe
2% also reviewed:
The Tie That Binds by Camryn Manheim
2% also reviewed:
TC Solid CHMBRY by
Does not include products
from the same brand
from the same brand
14 of the 135 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
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 4.1, while the average ease score for reviewers in this category is 4.3.
4.1 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Brand Repeats
Brand Repeaters
6 of the 135 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
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
-
- 0%
- 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.