Zi
Zinc Citrate
Zinc Citrate
Zinc combined with citric acid, used mostly in oral care.
What it does
It’s zinc combined with citric acid. The EU lists it for oral care, against plaque and against microbes.
The evidence, graded
expert consensusEU Regulation 1223/2009, Annex III entry 24, covers water-soluble zinc salts, naming zinc gluconate, zinc citrate and zinc sulfate among them. It caps them at 1% (as zinc) in products other than toothpaste and mouthwash.EU 2026 · Official Journal of the European Union (consolidated version, EUR-Lex) ↗
expert consensusUS safety reviewers (2024) assessed 27 zinc salts; their index lists zinc sulfate and zinc carbonate under that report, and their conclusion names zinc citrate. Jobs reported for the group include astringent (tightening), conditioning skin and hair, preserving and thickening. Zinc citrate’s highest reported use was 2%, in a toothpaste. They judged all 27 safe at the amounts and in the ways cosmetics use them, in products made not to irritate.Scott 2024 · International Journal of Toxicology ↗
Graded per the methodology: strong · moderate · emerging · expert consensus. A weak source on a strong claim gets the weaker label.
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