Oleth-3 ●
TL;DR. This ingredient is a nonionic surfactant and low-HLB emulsifier, used to help oil and water phases mix and to improve spreading in creams, lotions, cleansers, and hair products.
What does Oleth-3 do in a cosmetic formula?
This ingredient is a nonionic surfactant and low-HLB emulsifier, used to help oil and water phases mix and to improve spreading in creams, lotions, cleansers, and hair products.
Is Oleth-3 clean?
From a clean-beauty perspective, it carries friction because it is made through ethoxylation, a process associated with trace ethylene oxide and 1,4-dioxane residue controls. It is not typically flagged for high sensitization, but it is more scrutinized than simpler fatty alcohols or plant-derived emulsifiers.
Is Oleth-3 sustainable?
This material is partly fatty-chain derived and partly petrochemical-derived, depending on the supply chain. It is expected to biodegrade better than persistent silicone fluids, but the petrochemical processing step and wastewater-residue controls weaken its sustainability profile.
Is Oleth-3 COSMOS-approved?
It is generally not permitted in COSMOS-natural or COSMOS-organic products because ethoxylation is not an accepted Green Chemistry-aligned process in that standard. Its fit is limited by petrochemical input and residual-solvent monitoring, even though the fatty portion can come from renewable feedstocks.
How does Oleth-3 work chemically?
The molecule is a nonionic amphiphile with a C18 monounsaturated hydrophobic tail and an average of about 3 oxyethylene units, giving it a low HLB value around 6 to 7. It is commonly used at low single-digit percentages, is broadly pH-stable, and is often paired with higher-HLB emulsifiers to build a stable emulsifier system.
Last updated 2026-05-13