Tetrasodium EDTA
Ingredient Info
Tetrasodium EDTA is a chelating agent that binds to minerals (like calcium and magnesium) in skincare formulations. It's used to improve product stability, preserve texture, and prevent unwanted chemical reactions that can degrade the formula over time.
Benefits
- Stabilizes skincare formulations and extends shelf life
- Prevents discoloration and separation in products
- Helps other active ingredients work more effectively
Potential concerns
- May increase skin penetration of other ingredients—formulators should carefully assess what it's combined with
- Not absorbed through intact skin, but inhalation from sprays should be avoided
- Generally safe at typical use levels (under 2%), but not intended for ingestion
Science: The Cosmetic Ingredient Review Expert Panel confirmed tetrasodium EDTA is safe in cosmetic formulations at standard concentrations (typically under 2%), based on studies showing no skin absorption and systemic exposure well below toxic thresholds. The main consideration is that it can enhance penetration of other ingredients, so product formulation matters.
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