Green Tangerine Vita C Dark Spot Serum
Reviewed by SerumTruth Editorial · Price and formula checked July 2026
Do not be misled by "Vita C" in the name. The honest strengths are a sensibly dosed 4% niacinamide and 2% alpha-arbutin for the appearance of a more even tone, with the citrus extract as a pleasant, limited-evidence glow layer rather than a vitamin C treatment. On the disclosed actives it is a fair-priced, well-formulated brightening serum.
- Alpha Arbutin dosed at a clinical, high-end level
- Every active discloses its concentration
- Fragile actives sit in a clear, exposed package that lets them degrade
- Evidence18 / 30
Strength of the research behind the key actives
- Green Tangerine: limited evidence
- Niacinamide: moderate evidence
- Alpha Arbutin: moderate evidence
The average of the key actives’ evidence grades.
- Potency24 / 25
Dosed at studied levels, not fairy-dusted
- Green Tangerine (70%): dosed at a studied level
- Niacinamide (4%): dosed at a studied level
- Alpha Arbutin (2%): dosed at a clinical, high-end level for its category
How strongly the actives are dosed, led by the strongest, not how many there are.
- Delivery & stability6 / 20
Delivery tech + packaging that protects fragile actives
- Delivery: standard
- Packaging: clear dropper
- Air- or light-sensitive actives (Green Tangerine), so packaging is scored.
Delivery tech plus packaging, and packaging only counts when actives are fragile.
- Formulation9 / 10
Disclosure, active breadth, and ingredient generation
- 3 of 3 actives disclose a concentration
- 3 key actives (breadth credit caps at 3)
- Current-generation or synergistic: Green Tangerine, Alpha Arbutin
Disclosure, active breadth, and current-generation or synergistic actives.
- Value13 / 15
What a month of use costs vs. the category
- About $14 per month to use
- $31 for 40 ml, used about twice a day (about 0.3 ml each time), so a bottle lasts about 2.2 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 #41 of 56 brightening serums we have scored.
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What’s inside
| Active | Disclosed | Dose |
|---|---|---|
| Green Tangerine | 70% | Studied |
| Niacinamide | 4% | Studied |
| Alpha Arbutin | 2% | Clinical |
A 70% fresh green tangerine (Citrus Tangerina) extract base, brand-stated, layered with a disclosed 4% niacinamide and 2% alpha-arbutin, in a pump bottle. Green tangerine extract is a whole-fruit botanical prized for its natural vitamin C content, not a purified, dosed ascorbic acid, so it scores on its own limited-evidence grade rather than as a stabilised vitamin C. The niacinamide and arbutin are the real, well-dosed actives behind the name; despite the "Vita C" branding, this is not an L-ascorbic acid serum. None of the disclosed actives here are notably fragile.
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
What the research says
In lab testing on human skin cells, fermented green tangerine peel extract reduced UV related aging markers in a dose dependent way.
Protective effects of fermented Citrus unshiu peel extract against ultraviolet-A-induced photoageing in human dermal fibrobolasts. Phytotherapy Research, 2012. PubMed ↗
Topical 5% niacinamide was linked to more even looking skin tone, softer looking lines, and less visible blotchiness after 12 weeks.
Niacinamide: A B vitamin that improves aging facial skin appearance. Dermatologic Surgery, 2005. 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
- July 11, 2026Price and formula rechecked
- July 10, 2026Review 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.