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Vichy

Minéral 89 Hyaluronic Acid Booster Serum

$29.99·50 ml·~$11/mo to use

Reviewed by SerumTruth Editorial · Price and formula checked 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.

What we like
  • Cheap to use, about $11 a month
Watch-outs
  • No active concentrations are disclosed
SerumProof score71 / 100
  • 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.

Tap any row to see how its score was built.

Ranks #52 of 84 hydration & barrier serums we have scored.

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What’s inside

ActiveDisclosedDose
Hyaluronic Acidn/aStudied

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

DeliveryStandardPackagingClear dropper

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

What the research says

A multicenter study linked a topical hyaluronic acid serum with better looking hydration, tone, and texture over several follow up visits.

Multicenter evaluation of a topical hyaluronic acid serum. Journal of Cosmetic Dermatology, 2022. PubMed ↗

A study of the active, not this exact product. What matters for the score is whether this serum uses it at a comparable dose.

Higher-scoring alternatives

Same category, better SerumProof score. Worth a look before you buy.

Revision history
  1. July 11, 2026
    Price and formula rechecked
  2. July 10, 2026
    Review published

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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.