Minéral 89 Hyaluronic Acid Booster Serum
Reviewed by SerumTruth Editorial · Updated July 2026
A pleasant, well-tolerated hydrating base layer more than a treatment serum, doing straightforward humectant work without much to independently verify. Fine as a daily plumping step under a real treatment serum, but there is no potent, disclosed active here to hang a high proof score on.
- Evidence21 / 30
Strength of the research behind the key actives
- Hyaluronic Acid: moderate evidence
The average of the key actives’ evidence grades.
- Potency21 / 25
Dosed at studied levels, not fairy-dusted
- Hyaluronic Acid: dosed at a studied level
How strongly the actives are dosed, led by the strongest, not how many there are.
- Delivery & stability14 / 20
Delivery tech + packaging that protects fragile actives
- Delivery: standard
- Packaging: clear dropper
- No fragile actives here, so packaging barely moves the score.
Delivery tech plus packaging, and packaging only counts when actives are fragile.
- Formulation1 / 10
Disclosure, active breadth, and ingredient generation
- 0 of 1 actives disclose a concentration
- 1 key active (breadth credit caps at 3)
- No current-generation or synergy bonus
Disclosure, active breadth, and current-generation or synergistic actives.
- Value14 / 15
What a month of use costs vs. the category
- About $11 per month to use
- $29.99 for 50 ml, used about twice a day (about 0.3 ml each time), so a bottle lasts about 2.8 months
What a month of use costs: full marks at $6 a month or less, the floor at $60 a month or more.
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What’s inside
| Active | Disclosed | Dose |
|---|---|---|
| Hyaluronic Acid | n/a | Studied |
Sodium hyaluronate paired with sodium polyglutamate, marketed together as the "Moisture Acid Twins," in a base of Vichy’s mineralizing volcanic water (the "89" in the name). Polyglutamic acid has no separately tracked slug here since it behaves as a hyaluronic-acid-adjacent humectant, holding surface moisture the same way, so it is folded into the hyaluronic acid read rather than invented a category of its own. Neither ingredient is light- or air-sensitive, so the clear glass pump bottle is not the liability it would be for a vitamin C. No percentage is disclosed for either humectant.
How it’s delivered
Air- and light-sensitive actives (vitamin C, copper peptides) lose potency fast in the wrong packaging, so delivery and the bottle are scored, not just what’s on the label.
The actives, explained
Cosmetic information for general education, not medical advice. The SerumProof score reflects our reading of publicly available research and formulation disclosures. See how scoring works.