Heartleaf TECA Capsule Serum Calming Drop
Reviewed by SerumTruth Editorial · Price and formula checked July 2026
The niacinamide dose reads as the genuine story here, undisclosed but well-positioned ahead of the standard humectants. The heartleaf and TECA-centella marketing in the name is bigger than what actually shows up on the label, since both sit in supporting amounts rather than headline doses. A reasonable calming, tone-evening serum at a fair price for the category, just do not buy it for the centella story in the name.
- Cheap to use, about $12 a month
- 1 listed active is fairy-dusted below the 1% line
- No active concentrations are disclosed
- Evidence18 / 30
Strength of the research behind the key actives
- Niacinamide: moderate evidence
- Heartleaf (Houttuynia Cordata): limited evidence
- Centella Asiatica (Cica): moderate evidence
The average of the key actives’ evidence grades.
- Potency18 / 25
Dosed at studied levels, not fairy-dusted
- Niacinamide: dosed at a studied level
- Heartleaf (Houttuynia Cordata): present, but below a studied dose
- Centella Asiatica (Cica): below the 1% line, treated as fairy-dusted
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.
- Formulation3 / 10
Disclosure, active breadth, and ingredient generation
- 0 of 3 actives disclose a concentration
- 3 key actives (breadth credit caps at 3)
- Current-generation or synergistic: Heartleaf (Houttuynia Cordata)
Disclosure, active breadth, and current-generation or synergistic actives.
- Value14 / 15
What a month of use costs vs. the category
- About $12 per month to use
- $32 for 50 ml, used about twice a day (about 0.3 ml each time), so a bottle lasts about 2.8 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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Ranks #46 of 56 brightening serums we have scored.
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What’s inside
| Active | Disclosed | Dose |
|---|---|---|
| Niacinamide | n/a | Studied |
| Heartleaf (Houttuynia Cordata) | n/a | Light |
| Centella Asiatica (Cica) | n/a | Below 1% line |
Niacinamide is not printed as a percentage, but it sits fourth on a 49-ingredient label, ahead of both butylene glycol and glycerin, a decent sign of a genuinely dosed active rather than a token amount. The brand's 'TECA' story, its shorthand for a concentrated centella extract, is real but modest on the page: madecassoside, asiaticoside and madecassic acid all land in the last third of the ingredient list, past the preservative boosters, so they read as a finishing touch rather than the calming workhorse the name implies. Houttuynia cordata (heartleaf) itself sits mid-list at an undisclosed level too, closer to a supporting extract than the 60 to 80% hero doses seen in other heartleaf serums in this catalog. Packaged in a frosted glass dropper; none of the disclosed actives here are fragile, so the bottle is not a liability.
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
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 ↗
In lab testing on skin cells, heartleaf extract raised levels of filaggrin, a protein tied to a smoother, better hydrated skin barrier.
Antioxidant Houttuynia cordata extract upregulates filaggrin expression in an aryl hydrocarbon-dependent manner. Fukuoka Igaku Zasshi, 2014. 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.