Silver Dihydrogen Citrate ●
TL;DR. It functions as a broad-spectrum antimicrobial preservative, helping control bacteria, yeast, and mold in water-containing formulas.
What does Silver Dihydrogen Citrate do in a cosmetic formula?
It functions as a broad-spectrum antimicrobial preservative, helping control bacteria, yeast, and mold in water-containing formulas.
Is Silver Dihydrogen Citrate clean?
Clean frameworks often scrutinize this material because it intentionally releases antimicrobial metal ions and is not a familiar low-concern, food-style preservative. Sensitization is not the main issue, but use may be limited by preservative-positive-list rules and brand standards around metals.
Is Silver Dihydrogen Citrate sustainable?
This material relies on a mined metal and is not biodegradable in the way organic molecules are. Released ions can persist and interact with aquatic microorganisms, which creates more environmental friction than readily biodegradable organic preservatives.
Is Silver Dihydrogen Citrate COSMOS-approved?
It is not a standard permitted preservative under COSMOS-natural or COSMOS-organic, so alignment is weak. The organic ligand can be bio-based, but the mined, non-biodegradable metal component and persistence profile sit poorly with Green Chemistry priorities.
How does Silver Dihydrogen Citrate work chemically?
Chemically, it is a coordination salt in which a monovalent metal ion is complexed by a tricarboxylic acid ligand, allowing controlled ion release in water. It is typically used at very low levels, often in the low ppm active-metal range, and compatibility depends on pH, chloride, sulfur-containing ingredients, and other strong chelators that can reduce available ions.
Last updated 2026-08-16