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The Ordinary

Mandelic Acid 10% + HA

$8·30 ml·~$5/mo to use

Reviewed by SerumTruth Editorial · Price and formula checked July 2026

The gentle end of the acid aisle, honestly dosed and cheap. The evidence for mandelic is thinner and younger than for glycolic or lactic, so treat it as a patient, low-drama pick rather than the strongest resurfacer.

What we like
  • Mandelic Acid dosed at a clinical, high-end level
  • Cheap to use, about $5 a month
SerumProof score78 / 100
  • Evidence21 / 30

    Strength of the research behind the key actives

    • Mandelic Acid: moderate evidence
    • Hyaluronic Acid: moderate evidence

    The average of the key actives’ evidence grades.

  • Potency24 / 25

    Dosed at studied levels, not fairy-dusted

    • Mandelic Acid (10%): dosed at a clinical, high-end level for its category
    • 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: tinted glass
    • No fragile actives here, so packaging barely moves the score.

    Delivery tech plus packaging, and packaging only counts when actives are fragile.

  • Formulation4 / 10

    Disclosure, active breadth, and ingredient generation

    • 1 of 2 actives disclose a concentration
    • 2 key actives (breadth credit caps at 3)
    • No current-generation or synergy bonus

    Disclosure, active breadth, and current-generation or synergistic actives.

  • Value15 / 15

    What a month of use costs vs. the category

    • About $5 per month to use
    • $8 for 30 ml, used about twice a day (about 0.3 ml each time), so a bottle lasts about 1.7 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 #9 of 26 exfoliating acids serums we have scored.

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What’s inside

ActiveDisclosedDose
Mandelic Acid10%Clinical
Hyaluronic Acidn/aStudied

10% mandelic acid, disclosed, over hyaluronic acid for slip, in a frosted glass dropper. Mandelic is the largest of the common AHAs, so it penetrates slowly and is usually the mildest-feeling option, aimed at the appearance of an even, clearer-looking tone.

How it’s delivered

DeliveryStandardPackagingTinted glass

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

Topical mandelic acid use was linked to firmer, more elastic looking lower eyelid skin after 4 weeks of twice daily use.

Effects of Topical Mandelic Acid Treatment on Facial Skin Viscoelasticity. Facial Plastic Surgery, 2018. PubMed ↗

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.