Quick answer: the The Inkey List Polyglutamic Acid Serum is a budget stand-in for the Vichy Minéral 89 Hyaluronic Acid Booster — 77% active overlap sharing Hyaluronic Acid. It also overlaps with 5 other picks below.
Pricier picks the Polyglutamic Acid Serum matches
77%
Active overlap
Pricier pickHyaluronic Acid
Why it holds up: shares the same hero active — Hyaluronic Acid — which is what drives results here.
Full ingredient analysis →See them side by side →The Ordinary
70%
Active overlap
Pricier pickHyaluronic Acid
Why it holds up: shares the same hero active — Hyaluronic Acid — which is what drives results here.
Full ingredient analysis →See them side by side →The Inkey List
70%
Active overlap
Pricier pickHyaluronic Acid
Why it holds up: shares the same hero active — Hyaluronic Acid — which is what drives results here.
Full ingredient analysis →See them side by side →The Ordinary
70%
Active overlap
Pricier pickHyaluronic Acid
Why it holds up: shares the same hero active — Hyaluronic Acid — which is what drives results here.
Full ingredient analysis →See them side by side →Neutrogena
70%
Active overlap
Pricier pickHyaluronic Acid
Why it holds up: shares the same hero active — Hyaluronic Acid — which is what drives results here.
Full ingredient analysis →See them side by side →66%
Active overlap
Pricier pickHyaluronic Acid
Why it holds up: shares the same hero active — Hyaluronic Acid — which is what drives results here.
Full ingredient analysis →See them side by side →Every match above mirrors an existing dupe page verbatim — re-derived from the 6 comparisons where the Polyglutamic Acid Serum appears as an alternative. No invented data.
Common questions
Is the The Inkey List Polyglutamic Acid Serum a real dupe?
It overlaps on hero actives with 6 same-category products in our catalogue — most closely the Vichy Minéral 89 Hyaluronic Acid Booster at 77% active overlap. "Dupe" here means shared active ingredients, not an identical formula.
Does a higher overlap mean it is better?
No — overlap only measures shared hero actives. Base, supporting actives, texture and price still differ, so use the side-by-side compare for the full picture.
Educational information only — not medical advice. Overlap reflects shared hero actives, not clinical equivalence.