Sodium Isethionate ●
TL;DR. This ingredient is used as a mild anionic cleansing agent and foam booster, most often in rinse-off cleansers, shampoo bars, and syndet bars. It helps create dense, creamy lather while improving the feel of cleansing formulas.
What does Sodium Isethionate do in a cosmetic formula?
This ingredient is used as a mild anionic cleansing agent and foam booster, most often in rinse-off cleansers, shampoo bars, and syndet bars. It helps create dense, creamy lather while improving the feel of cleansing formulas.
Is Sodium Isethionate clean?
From a clean-beauty perspective, it is generally well tolerated and is not a common restricted-list issue. The main caveat is its synthetic manufacturing route and the need for good purification control rather than a major sensitization concern.
Is Sodium Isethionate sustainable?
This material is typically made from petrochemical or mixed-origin feedstocks and is highly water soluble. It is generally considered biodegradable, but its alignment is less strong than plant-derived, minimally processed surfactant systems.
Is Sodium Isethionate COSMOS-approved?
It has partial alignment with COSMOS-style natural formulation because related mild surfactant chemistry may be allowed under conditions, but the standalone material is not a straightforward COSMOS-organic fit. From a Green Chemistry view, its mildness and biodegradability are positives, while nonrenewable feedstock reliance and synthetic processing are the compromises.
How does Sodium Isethionate work chemically?
The molecule is a small sulfonate salt with a hydroxyethyl group, giving it strong water solubility and anionic character. It is typically stable across the mildly acidic to neutral pH range used in cleansers and is commonly paired with fatty-acid-based surfactants to improve foam density and bar mildness.
Last updated 2026-05-14