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Beauty & Personal Care

PERFECT ONE Pharmaceutical Face Serum SP Clear Anti-Aging Skincare Essence with Vitamin C and Hyaluronic Acid Reduce Wrinkles, Lines, for All Kinds of Skin, Made in Japan 1.02 fl.oz

Beauty & Personal Care3.9· 139,966 Amazon ratings

Bias-adjusted across 139,966 Amazon ratings, Bayesian-shrunk to the category prior so the headline score reflects relative quality — not a raw star average. Cohort: Beauty & Personal Care.

6.5%
Percentile · Global
7.0%
Percentile · Cohort
Beauty & Personal Care
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PERFECT ONE Pharmaceutical Face Serum SP Clear Anti-Aging Skincare Essence with Vitamin C and Hyaluronic Acid Reduce Wrinkles, Lines, for All Kinds of Skin, Made in Japan 1.02 fl.oz

How the score was built

Amazon ratings
139,966

used for the Bayesian percentile

Raw star average
3.9 / 5

unadjusted Amazon mean

Bayesian avg
3.90

raw rating shrunk to the category prior

Reviewer-graph z
-0.071

bias-corrected vs. each reviewer's baseline (2 qualifying)

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Same category · Beauty & Personal Care

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