Science
Mechanism of Action
This ingredient functions by sequestering metal ions, such as copper, calcium, magnesium, and iron. On the skin, this chelating action prevents the deposition of these ions on the surface, contributing to clearer pores by binding to excess minerals and impurities. It also aids in retaining skin nourishment and improving the absorption of other beneficial active ingredients. The penetration-enhancing effect is achieved by chelating calcium, which transiently disrupts the surface structure of skin cells, potentially facilitating the entry of other compounds.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
As a chelating agent primarily utilized at low concentrations to maintain product integrity and facilitate absorption, Disodium EDTA-Copper is not typically used in amounts that would be considered 'dusting' for its core function.
The Formula
Formulation
Stability
Disodium EDTA-Copper exhibits optimal stability within an acidic pH range, maintaining nearly 100% stability up to pH 6.5. Formulations with a pH less than 7 are generally preferred. Dissolution in water can be slow, potentially exceeding 30 minutes, but can be accelerated with heat. Storage should minimize exposure to humidity and water to ensure stability.
Conflicts
- Aluminum
- Ingredients whose safety is reliant on minimal skin absorption (due to its penetration enhancing properties)
Safety
Safety Profile
The CIR Expert Panel has determined Disodium EDTA and its related compounds, including Disodium EDTA-Copper, to be safe for cosmetic use at established concentrations. It is not absorbed significantly through the skin and is not classified as a dermal irritant or sensitizer by CIR. The FDA permits its use as a color additive in cosmetic shampoos, with the specific exclusion of use around the eyes. While the ingredient itself is safe, its capacity to enhance the penetration of other chemicals necessitates careful formulation considerations.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Disodium EDTA-Copper is a valuable multi-functional chelating agent, enhancing product stability and offering potential skin benefits through pore purification and nutrient absorption, provided it is precisely formulated to account for its penetration-enhancing properties.
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