Hyaluron Activ B3 Concentrated Plumping Serum
Reviewed by SerumTruth Editorial · Updated July 2026
A quiet, well-behaved two-active serum from a brand built on sensitive-skin credibility, not a headline-grabbing treatment. 6% niacinamide and 1.5% hyaluronic acid are both honestly dosed, and the short, fragrance-free ingredient list is the point for skin that reacts to more ambitious formulas. It costs French-pharmacy money for a fairly basic pairing, but as a low-irritation option it clears that bar easily.
- Evidence21 / 30
Strength of the research behind the key actives
- Niacinamide: moderate evidence
- Hyaluronic Acid: moderate evidence
The average of the key actives’ evidence grades.
- Potency21 / 25
Dosed at studied levels, not fairy-dusted
- Niacinamide (6%): dosed at a studied level
- Hyaluronic Acid (1.5%): 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.
- Formulation7 / 10
Disclosure, active breadth, and ingredient generation
- 2 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.
- Value11 / 15
What a month of use costs vs. the category
- About $25 per month to use
- $42 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.
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What’s inside
| Active | Disclosed | Dose |
|---|---|---|
| Niacinamide | 6% | Studied |
| Hyaluronic Acid | 1.5% | Studied |
A minimalist eight-ingredient formula built on 6% niacinamide and 1.5% sodium hyaluronate, in an Avène thermal spring water base with a touch of adenosine for a supporting anti-wrinkle effect (present but undisclosed as a percentage, and not tracked as a scored active here). Both headline actives sit within their typical studied ranges, niacinamide toward the higher end of it, and neither is prone to browning or breaking down in light, so the plain glass dropper is not a liability. It skips fragrance and the longer ingredient lists common in the category, in keeping with a sensitive-skin, minimal-formula reputation.
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.