Vinergetic C+ Serum
Reviewed by SerumTruth Editorial · Updated July 2026
A reasonably priced, low-irritation vitamin C option for people who react to L-ascorbic acid, but the undisclosed ester concentration and its mid-list position make it hard to verify real potency. Treat it as a gentle brightening layer, not a head-to-head rival for a disclosed, high-dose L-ascorbic acid serum.
- Evidence21 / 30
Strength of the research behind the key actives
- Tetrahexyldecyl Ascorbate: moderate evidence
The average of the key actives’ evidence grades.
- Potency14 / 25
Dosed at studied levels, not fairy-dusted
- Tetrahexyldecyl Ascorbate: present, but below a studied dose
How strongly the actives are dosed, led by the strongest, not how many there are.
- Delivery & stability16 / 20
Delivery tech + packaging that protects fragile actives
- Delivery: standard
- Packaging: airless, opaque
- Air- or light-sensitive actives (Tetrahexyldecyl Ascorbate), so packaging is scored.
Delivery tech plus packaging, and packaging only counts when actives are fragile.
- Formulation3 / 10
Disclosure, active breadth, and ingredient generation
- 0 of 1 actives disclose a concentration
- 1 key active (breadth credit caps at 3)
- Current-generation or synergistic: Tetrahexyldecyl Ascorbate
Disclosure, active breadth, and current-generation or synergistic actives.
- Value10 / 15
What a month of use costs vs. the category
- About $26 per month to use
- $44 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 |
|---|---|---|
| Tetrahexyldecyl Ascorbate | n/a | Light |
A gentle vitamin C serum built on Ascorbyl Tetraisopalmitate, an oil-soluble vitamin C ester Caudalie describes as stabilized against light and air, rather than the harsher L-ascorbic acid used in most benchmark vitamin C serums. Palmitoyl Grape Seed Extract, one of Caudalie's signature grape-polyphenol antioxidants, sits high on the list too but at an undisclosed level, and tocopherol (vitamin E) is present as a minor supporting antioxidant. It ships in a matte green, airtight, lockable pump bottle, sensible protection for a vitamin C formula even though the ester form is inherently more stable than L-ascorbic acid.
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.