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Health, Household & Baby

Natural Charcoal Teeth Whitening Powder. From USA Grown Hardwood Trees. Organic Mint Flavor, Bentonite and Kaolin Clay, Alum-Free Baking Soda. Compare to Tooth Whitener Toothpaste

Health, Household & Baby4.3· 225 Amazon ratings

Bias-adjusted across 225 Amazon ratings, Bayesian-shrunk to the category prior so the headline score reflects relative quality — not a raw star average. Cohort: Health, Household & Baby.

44.4%
Percentile · Global
37.2%
Percentile · Cohort
Health, Household & Baby
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Natural Charcoal Teeth Whitening Powder. From USA Grown Hardwood Trees. Organic Mint Flavor, Bentonite and Kaolin Clay, Alum-Free Baking Soda. Compare to Tooth Whitener Toothpaste

How the score was built

Amazon ratings
225

used for the Bayesian percentile

Raw star average
4.3 / 5

unadjusted Amazon mean

Bayesian avg
4.30

raw rating shrunk to the category prior

Reviewer-graph z
-0.707

bias-corrected vs. each reviewer's baseline (0 qualifying)

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Same category · Health, Household & Baby

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