Sample
20 redditors with explicit opinion · 7 positive · 0 negative · 1 neutral
Score0.906 — formula: 0.75 × % positive + 0.25 × pos/neg ratio
Confidence95% CI: 53–98% · the true approval rate falls in this range with 95% statistical confidence
Verdict
Recommended — ≥50% positive. Mixed but more good than bad.
Sources
r/SkincareAddiction, r/r/AsianBeauty, r/SkincareAddicts, r/r/tretinoin