Vitamin C Complex Serum
Reviewed by SerumTruth Editorial · Updated July 2026
A budget vitamin C that leans on the stable SAP form with a splash of the acid, aimed at the appearance of brightness. The derivative evidence is lighter than pure vitamin C and the percentages are undisclosed, but at this price the formula is thoughtful. A tidy, low-cost brightening option.
- Evidence26 / 30
Strength of the research behind the key actives
- Sodium Ascorbyl Phosphate: moderate evidence
- Vitamin C (L-Ascorbic Acid): strong evidence
- Score is the average of the key actives’ evidence grades.
- Potency20 / 25
Dosed at studied levels, not fairy-dusted
- Sodium Ascorbyl Phosphate: dosed at a studied level
- Vitamin C (L-Ascorbic Acid): present, but below a studied dose
- Potency tracks how strongly the actives are dosed, led by the strongest, not how many there are.
- Delivery & stability12 / 20
Delivery tech + packaging that protects fragile actives
- Delivery: standard
- Packaging: tinted glass
- Air- or light-sensitive actives (Vitamin C (L-Ascorbic Acid)), so packaging is scored.
- Formulation3 / 10
Disclosure, active breadth, and ingredient generation
- 0 of 2 actives disclose a concentration
- 2 key actives (breadth credit caps at 3)
- Current-generation or synergistic: Sodium Ascorbyl Phosphate
- Value14 / 15
What a month of use costs vs. the category
- About $13 per month to use
- $21 for 30 ml, used about twice a day (about 0.3 ml each time), so a bottle lasts about 1.7 months
- Band: $6/month or less earns full marks, $60/month or more hits the floor.
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What’s inside
| Active | Disclosed | Dose |
|---|---|---|
| Sodium Ascorbyl Phosphate | n/a | Studied |
| Vitamin C (L-Ascorbic Acid) | n/a | Light |
A dual vitamin C system of stable sodium ascorbyl phosphate plus a smaller amount of L-ascorbic acid, with glutathione and fruit extracts, in a frosted-glass dropper. The glutathione is included to help recycle spent vitamin C, and the SAP does most of the work while staying stable. None of the levels are disclosed.
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.