Disodium EDTA
dye-SO-dee-um ee-dee-tee-ay
What Is Disodium EDTA?
A chelating agent that binds to metal ions in water and product formulations. It prevents hard water minerals from interfering with hair product performance and helps preservatives work better.
Source: Synthetic organic compound
Origin: Synthetic
Also known as: Disodium Ethylenediaminetetraacetate
What Does Disodium EDTA Do to Your Hair?
Chelates (binds and deactivates) metal ions like calcium, magnesium, and iron that are present in hard water. Prevents mineral buildup on hair that causes dullness and dryness. Also boosts preservative efficacy by removing metals that promote microbial growth.
Best For
Hard water areas, buildup-prone hair, dull hair, all hair types
Not Recommended For
None known at standard concentrations
Concentration Matters
0.1-0.5% in products
Hair Type Compatibility
Method Compatibility
Safety & Regulation
Generally safe at standard cosmetic concentrations. Some environmental concern about persistence in water systems. EDTA itself is non-toxic to humans at cosmetic levels. Slightly less biodegradable than newer chelating agents.
FDA Status: Generally Recognized As Safe
FDA permits use in cosmetics and food. Also approved as food additive.
EWG Score: 3/10
HairAide Verdict
Essential for anyone in a hard water area. Helps your products work properly by neutralizing mineral interference. Safe for personal use though environmental persistence is a minor concern.
Products That Contain Disodium EDTA
Shampoos, conditioners, hard water products, chelating treatments
Alternatives to Disodium EDTA
If you want to avoid Disodium EDTA, look for products with these ingredients instead:
Tetrasodium EDTA, Phytic Acid, Citric Acid, Trisodium Ethylenediamine Disuccinate
Frequently Asked Questions
Yes, Disodium EDTA has a safety rating of 7/10 and is generally considered safe for use in hair products. Generally safe at standard cosmetic concentrations. Some environmental concern about persistence in water systems. EDTA itself is non-toxic to humans at cosmetic levels. Slightly less biodegradable than newer chelating agents.
Disodium EDTA is CG-method approved and is generally considered safe for curly hair.
Yes, Disodium EDTA is approved for the Curly Girl method.
Some alternatives to Disodium EDTA include: Tetrasodium EDTA, Phytic Acid, Citric Acid, Trisodium Ethylenediamine Disuccinate
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