Dpl iia professional acne treatment light therapy reviews

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0% of potentially unnatural reviews removed (why?)

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Note: While Amazon.com claims 164 Ratings, we counted 36 Reviews available on their site.
Note: We only analyze "reviews" and ignore one-tap "ratings".

Report Card

Fail Overall Grade

FAIL

Deleted Reviews

FAIL

Reviewer Participation

WARN

Rating Trend

WARN

Suspicious Reviewers

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

Oct 27, 2018      

100%
TRUST

  • Verified Purchaser

Reviewer: S O.

  • Easy Grader (avg. rating: 4.6)



Least Trusted Reviews



Analysis Details

Fail

Deleted Reviews

  • 3
  • Reviews have been deleted

We discovered a total of 3 deleted Reviews for this product, with an average rating of 3.3. 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:

  1. 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.
  2. We have no information on reviews that were never published in the first place.
  3. 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

Reviewer Participation

  • 33%
  • From reviewers with an overrepresented participation

We see the following 1 participation group with a statistically significant greater concentration than what we'd expect to see:

  • Reviewers with 1-5 Reviews: 33.3% (Avg. rating: 3.0)

In total, we found that 12 reviewers (or 33%) are within an overrepresented participation group. These reviews have rated this product an average of

3.0

, while all other reviews 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.



Warn

Rating Trend

  • 11%
  • Created over 2 days

We counted

36 reviews

for this product over the span of

2,439 days

, an average of 0.0 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 1 or fewer reviews on any given day.

However, we see the following 2 days exceeding this threshold:

  • 2 Reviews on May 5, 2018 (Avg. rating: 5.0)
  • 2 Reviews on Jul 6, 2019 (Avg. rating: 5.0)

In total, we found that

4 reviews

were created on just

2 days

. Although any days with a larger number of reviews than expected is suspicious, the discrepancy in ratings from reviews created on these high volume days and reviews created on other days isn't significant enough to rule out the possibility of it being due to random chance.



Warn

Suspicious Reviewers

One-Hit Wonders

  • 14%
  • have only posted one review

5

of the

36

reviewers have only reviewed this product. While this is more One-Hit Wonders than we'd expect to see, it does not appear to have a significant impact on the overall rating.


2.6/5

from one-hit wonders

4.0/5

from reviewers with more than one review



Take-Back Reviewers

  • 42%
  • have previously deleted reviews

15

of the

36

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, the discrepancy in ratings between the Take-Back Reviewers and reviewers who don't have any deleted reviews in their history isn't significant enough to rule out the possibility of it being due to random chance.



Pass

Unverified Purchases

  • 11%
  • Unverified Purchases

4

of the

36

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.


2.8/5

from unverified purchasers

4.0/5

from verified purchases


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

  • 0%
  • 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

Phrase Repetition

Common Phrases in Reviews:



  • 0%
  • Used substantial repetitive phrases

0

of the

36

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.
Read more about our Phrase Repetition test.


Pass

Overlapping Review History

Reviewers of this product have ALSO reviewed the following products:


  • 6%
  • Substantial overlapping review history

2

of the

36

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 3.8, while the average ease score for reviewers in this category is 4.3.



Pass

Brand Repeats

Brand Repeaters

  • 14%
  • Reviewed other products from this brand

5

of the

36

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

  • 0%
  • Admitted to receiving an incentive


Does light therapy for acne work?

Phototherapy is remarkably effective for treating acne lesions, especially acne that's caused by inflammation or bacteria. While there's no cure for acne, phototherapy is backed up by significant research as an acne management tool.

How do I use DPL IIA?

Place provided goggles over the eyes when treating the face. Press power button once for wrinkle treatment, twice for acne treatment, and third time for all lights. Place device directly on the skin over the desired treatment area for 3 minutes. The device will auto-shut off after completion of 3 minute treatment.

How do you use a revive light therapy wand?

Place device directly on the skin over the desired treatment area for 3 minutes. Do not move or wave device across the treatment area. The device will auto-shut off after completion of 3 minute treatment. Move the device to the next treatment area and repeat step 3.

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