Researched by Helena DeMaria-Williams
Formula IngredientChelating AgentINCI: Trisodium Ethylenediamine Disuccinate
Trisodium ethylenediamine disuccinate (EDDS) is a biodegradable chelating agent used in cosmetic formulations to neutralise metal ions (particularly copper and iron) that typically originate from water. By binding these metal ions, it extends product stability and shelf life. It is notably selective, targeting problematic metal ions while being less aggressive toward benign ones like calcium and magnesium.
Category
Chelating Agent
Irritation Risk
Low
Skin Types
all skin types
metal ion chelation, formula stabilisation, preservative boosting, product shelf life extension
Generally well tolerated at typical cosmetic concentrations. No known irritation concerns. No EU Annex II or III restrictions. Biodegradable alternative to EDTA.
Does not increase photosensitivity.
No reproductive or developmental concerns noted. Used as a formulation stabiliser at low concentrations.
Trisodium ethylenediamine disuccinate (EDDS) is a biodegradable chelating agent used in cosmetic formulations to neutralise metal ions (particularly copper and iron) that typically originate from water. By binding these metal ions, it extends product stability and shelf life. It is notably selective, targeting problematic metal ions while being less aggressive toward benign ones like calcium and magnesium.