Sodium Sulfite

Sodium Sulfite is a preservative and hair waving or straightening ingredient. It’s in 28 products on Poliage, most often cleanser, body wash and hair styling. Avoid lists on Poliage that include it: none.

Updated October 21, 2026

In plain English

Sodium sulfite: used to keep microbes from growing. Also used in hair-waving and straightening products.

What it does

Contains Sodium Sulfite: hair-waving-or-straightening
Function listed in CosIng
Contains Sodium Sulfite: preservative
Function listed in CosIng

Source: CosIng, the European Commission cosmetic ingredient database, ref 38095, accessed October 22, 2026. Also listed as natrii sulfis and sodium sulphite.

Products that contain Sodium Sulfite

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