Isoceteth-20
Isoceteth-20
- Role
- An emulsifier that helps hold oils in a water-based base.
- Catalog formulas
- 6
- Type
- Texture
- Verified
- 06.11.2026
What does this ingredient do in an antiperspirant?
An ethoxylated branched C16 alcohol with an average of 20 ethylene oxide units. CosIng lists it as an emulsifying and cleansing surfactant.
Part of a system, not a label in isolation
In the catalog it appears in roll-on emulsions. It helps the base stay uniform and does not affect sweating.
The CIR included Isoceteth-20 in its assessment of alkyl PEG ethers (2012) and found it safe in the present practices of use when formulated to be non-irritating.
The non-irritating condition reflects that products with some ingredients of this group can irritate the skin. Tolerance depends on the finished product.
Do not confuse it with Ceteth-20: the prefix "iso" means a branched alcohol chain, and it is a separate INCI name.
Products containing Isoceteth-20
Links are based on the complete published INCI list for the exact product version.
Sources
The conclusions apply to the stated conditions and jurisdictions, not automatically to every concentration or product.
- EU CosIng: ISOCETETH-20 Supports: function, substance identity
- CIR: Safety Assessment of Alkyl PEG Ethers as Used in Cosmetics (2012) Supports: safety assessment, non-irritating formulation condition