Ingredient glossary
Tetrasodium EDTA
On your shelf ✓What Tetrasodium EDTA does for your skin, who it suits, and what to watch for.
INCI: Tetrasodium EDTA
In short: Tetrasodium EDTA delivers chelation and preservation support, plays a broad, supporting role, and the evidence behind it is strong.
- What it does
- Chelation, preservation support
- Best for
- A broad, supporting role
- Evidence
- Strong
The molecule
The five pieces are meant to be apart. Tetrasodium EDTA is a salt, and its parts are held to each other by opposite charges rather than by a bond.
The Glow take
Nice to have, and nothing to overthink.
Tetrasodium EDTA plays a quiet supporting role, rounding out a formula rather than being the reason you buy it.
— Maya
What it does
- chelation
- preservation support
strong evidenceCIR assessed EDTA and its salts in 1998 and reaffirmed the conclusion in 2019: safe as used, with tetrasodium EDTA typically at or under 0.3 percent in leave-ons. The panel notes EDTA can modestly enhance penetration of co-formulated ingredients by loosening calcium bridges in the surface layer; it frames this as a formulating consideration, not a consumer hazard, and skin absorption of EDTA itself stays minimal.
On a label: usually effective at 0.05-0.3%.
Who it's for, and who should skip it
Tends to suit
No specific skin type. It is a broadly used ingredient.
Approach with care
- rare allergy
- Clogs poresLow
- Irritation riskLow
How it fits each skin type
- DryNeutral
- CombinationNeutral
- OilyNeutral
- SensitiveNeutral
Take extra care if any of these apply to you: rare allergy.
Where it fits in your routine
Plays well with
- preservatives
Tetrasodium EDTA, answered
Is Tetrasodium EDTA safe during pregnancy?
Yes. Tetrasodium EDTA is considered safe to use during pregnancy and breastfeeding. As with anything, if you are unsure it is worth a quick word with your doctor or midwife.
Who should avoid Tetrasodium EDTA?
Approach Tetrasodium EDTA with care if any of these apply to you: rare allergy.
What concentration of Tetrasodium EDTA actually works?
Tetrasodium EDTA tends to do its job in the 0.05 to 0.3% range. Much lower and it is likely underdosed.
This, for every label you own
One ingredient is easy. A full label is where it gets confusing. The Ingredient Decoder reads any product and tells you the honest truth, ingredient by ingredient.
Sources & how we reviewed this
- CIR safety review EDTA and salts 1998 reaffirmed 2019summary page only, the document itself was not read