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Tetrasodium Iminodisuccinate

What Tetrasodium Iminodisuccinate is & what it does

Tetrasodium Iminodisuccinate is a biodegradable chelating agent used in skincare and sunscreen formulas to bind trace metal ions. By sequestering metals it helps stabilize the formula, improve preservative performance, and protect against discoloration or rancidity. It is often chosen as a more eco-friendly alternative to older chelators such as EDTA.

What does Tetrasodium Iminodisuccinate do in skincare?

Tetrasodium Iminodisuccinate is a chelating agent that binds trace metal ions in a formula. By sequestering metals it helps keep the product stable, supports preservative performance, and reduces discoloration or rancidity. It does not provide a direct skin benefit, working instead behind the scenes.

Is Tetrasodium Iminodisuccinate safe?

Tetrasodium Iminodisuccinate is generally considered safe at the low levels used as a chelating agent in cosmetics. It is used in small amounts and is not a common irritant. It is often chosen as a biodegradable alternative to older chelators like EDTA.

Is Tetrasodium Iminodisuccinate natural or synthetic?

Tetrasodium Iminodisuccinate is a synthetic ingredient produced through chemical processing. It is valued partly because it is readily biodegradable, which makes it a more eco-friendly option among chelating agents.

Sunscreens with Tetrasodium Iminodisuccinate

We rate 54 sunscreens that contain it, showing the top 10 by overall score:

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