Top Active Matches & Dupes
Exact science-based dupes appear first. When a strict dupe is not available yet, we still show the closest active-match alternatives from the same product category.
Science-Led
The Inkey List · drugstore
Retinol Serum
Active Match
Active Match: 50%Formula Similarity: 32%
50% active ingredient overlap with the source product.
retinolMissing: niacinamide
B78%
No price
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Ordinary · drugstore
Retinol 1% in Squalane
Active Match
Active Match: 47%Formula Similarity: 18%
47% active ingredient overlap with the source product.
retinolMissing: niacinamide
B73%
No price
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the ordinary · mid-range
Retinol 0.5% in Squalane
Active Match
Active Match: 50%Formula Similarity: 19%
50% active ingredient overlap with the source product.
retinolMissing: niacinamide
C68%
No price
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We rank results with INCI-level analysis first, then fall back to the strongest active matches and closest alternatives so every product page still shows comparable options. Fallbacks stay within the same category as the source product, so cleansing balms only surface cleanser dupes instead of adjacent product types. Active Match % measures shared science-backed actives. Formula Similarity % measures total ingredient overlap when full INCI lists are available.