Sodium Cetearyl Sulfate ●
TL;DR. This ingredient functions mainly as an anionic emulsifier and surfactant, helping oil and water stay blended while adding some foam and cleansing support.
What does Sodium Cetearyl Sulfate do in a cosmetic formula?
This ingredient functions mainly as an anionic emulsifier and surfactant, helping oil and water stay blended while adding some foam and cleansing support.
Is Sodium Cetearyl Sulfate clean?
From a clean-beauty perspective, it is generally acceptable but not universally favored because some it-free standards screen out this class. It can feel drying or irritating at higher levels, especially in leave-on or eye-area formulas, but is commonly manageable when used at low emulsifying levels.
Is Sodium Cetearyl Sulfate sustainable?
This material is typically made from long-chain fatty alcohols that may come from coconut, palm, or petrochemical sources, so sourcing transparency matters. It is expected to be biodegradable, but palm-linked feedstocks can carry supply-chain concerns if not certified.
Is Sodium Cetearyl Sulfate COSMOS-approved?
It can be permitted under COSMOS-natural when made from allowed feedstocks and processing routes, but it does not automatically qualify as organic itself. Its Green Chemistry fit is mixed, with biodegradable fatty-chain chemistry on one side and sulfation plus possible palm sourcing on the other.
How does Sodium Cetearyl Sulfate work chemically?
The molecule is a sodium salt of long-chain alkyl it esters, mainly C16 to C18 chains, giving it strong anionic surface activity and emulsion-stabilizing behavior. It is typically used at low percentages in creams and lotions, often below primary cleanser levels, and performs best in systems where electrolyte load and low pH do not destabilize the emulsion.
Last updated 2026-05-13