Ceteth-25 ●
TL;DR. It functions mainly as a nonionic emulsifier and solubilizer, helping oil and water phases combine and keeping creams, lotions, cleansers, and fragranced systems uniform.
What does Ceteth-25 do in a cosmetic formula?
It functions mainly as a nonionic emulsifier and solubilizer, helping oil and water phases combine and keeping creams, lotions, cleansers, and fragranced systems uniform.
Is Ceteth-25 clean?
Clean-beauty frameworks often flag this ingredient because it is made through ethoxylation, a process associated with trace ethylene oxide and 1,4-dioxane if purification is not well controlled. It is generally considered low-irritation in finished formulas, but it has clear restricted-list friction in stricter standards.
Is Ceteth-25 sustainable?
This material is typically partly based on a long-chain fatty alcohol that may come from palm, coconut, or petrochemical sources, plus petrochemical-derived ethoxylation chemistry. It is expected to be biodegradable in wastewater conditions, but sourcing traceability and manufacturing inputs are the main sustainability caveats.
Is Ceteth-25 COSMOS-approved?
It is not permitted under COSMOS-natural or COSMOS-organic standards because ethoxylated materials are outside the standard’s allowed chemistry. From a Green Chemistry lens, its functional efficiency is useful, but petrochemical input, ethoxylation, and potential trace process residues weaken alignment.
How does Ceteth-25 work chemically?
The molecule is a C16 fatty-chain ether with an average of about 25 oxyethylene units, giving it high water dispersibility, nonionic behavior, and an HLB typically around the mid-teens. It is commonly used around 0.5% to 5% in emulsions or solubilizing systems and is broadly stable across typical cosmetic pH ranges, with good compatibility in many surfactant and electrolyte-containing formulas.
Last updated 2026-05-16