Tetrasodium EDTA
TET-rah-SO-dee-um ee-dee-tee-ay
What Is Tetrasodium EDTA?
A stronger chelating agent than Disodium EDTA, more effective at higher pH levels. Binds metal ions to prevent mineral buildup and improve product performance.
Source: Synthetic organic compound
Origin: Synthetic
Also known as: Tetrasodium Ethylenediaminetetraacetate
What Does Tetrasodium EDTA Do to Your Hair?
Provides stronger chelation of metal ions than disodium EDTA, particularly effective in alkaline (high pH) formulations. Removes mineral deposits from hard water that cause dull, dry hair. Boosts preservative system efficacy.
Best For
Hard water areas, buildup-prone hair, alkaline products, dull hair
Not Recommended For
None known at standard concentrations
Concentration Matters
0.1-0.5% in products
Hair Type Compatibility
Method Compatibility
Safety & Regulation
Same safety profile as Disodium EDTA. Non-toxic at cosmetic concentrations. Environmental persistence concern similar to Disodium EDTA. Well-tolerated by all skin and hair types.
FDA Status: Generally Recognized As Safe
FDA permits use in cosmetics and food.
EWG Score: 3/10
HairAide Verdict
Functionally similar to Disodium EDTA but more effective in alkaline formulations. Same safety and environmental profile. A useful ingredient for combating hard water effects on hair.
Products That Contain Tetrasodium EDTA
Shampoos, conditioners, color treatments, chelating products
Alternatives to Tetrasodium EDTA
If you want to avoid Tetrasodium EDTA, look for products with these ingredients instead:
Disodium EDTA, Phytic Acid, Trisodium Ethylenediamine Disuccinate
Frequently Asked Questions
Yes, Tetrasodium EDTA has a safety rating of 7/10 and is generally considered safe for use in hair products. Same safety profile as Disodium EDTA. Non-toxic at cosmetic concentrations. Environmental persistence concern similar to Disodium EDTA. Well-tolerated by all skin and hair types.
Tetrasodium EDTA is CG-method approved and is generally considered safe for curly hair.
Yes, Tetrasodium EDTA is approved for the Curly Girl method.
Some alternatives to Tetrasodium EDTA include: Disodium EDTA, Phytic Acid, Trisodium Ethylenediamine Disuccinate
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