Disodium Edta-Copper

What is Disodium Edta-Copper?

Disodium EDTA-Copper is a coordination complex formed by ethylenediaminetetraacetic acid (EDTA), a synthetic aminopolycarboxylic chelating agent, bound to copper(II) ions and solubilized as the disodium salt. This compound falls into the category of metal sequestrants widely employed in rinse-off and leave-on cosmetics like cleansers, moisturizers, and hair products. It operates by tightly coordinating polyvalent metal cations—such as iron, calcium, and magnesium—from water or ingredients, inhibiting their role in catalyzing oxidation, emulsion breakdown, or discoloration. The copper moiety contributes a characteristic blue-green pigmentation, aiding in achieving uniform visual aesthetics across production batches. Furthermore, copper's interaction with surface proteins delivers an astringent tightening sensation, enhancing perceived skin refinement without penetration. Incorporated at trace levels, it supports overall product integrity and sensory appeal in diverse formulations.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 1-4 View on EWG →
PubChem View on PubChem →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Colorant
Provides or corrects color using dyes or pigments, helping achieve a consistent shade and visual appearance across batches and throughout wear.
Astringent
Creates a temporary tightening and toning effect by contracting surface proteins, helping reduce the look of oiliness and refining feel on skin.
Chelating agent
Binds to metal ions to prevent them from affecting product stability or skin.

Benefits

Enhances product stability by neutralizing metal ions that cause degradation.

Provides subtle coloration for consistent appearance in formulas.

Delivers temporary skin tightening for a smoother, less oily look.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit Who Should Avoid
Individuals using water-based skincare needing long-lasting freshness.
Those with known sensitivity to copper compounds.
Users preferring products with even visual shading.
People with compromised skin barriers prone to metal reactions.
People seeking formulas with a refined, toned surface feel.
Individuals avoiding trace heavy metals in cosmetics.

Safety Notes

  • Deemed safe in cosmetics at typical use levels by expert reviews.
  • Presents low potential for skin irritation in standard concentrations.

Frequently Asked Questions about Disodium Edta-Copper

What does Disodium EDTA-Copper do in products?

It chelates metals to preserve stability, adds tint, and provides astringency for toned feel.

Is it safe for daily skincare use?

Yes, regulatory assessments confirm safety at cosmetic concentrations with low irritation.

Does it clog pores?

Rated non-comedogenic, unlikely to contribute to pore blockage.