Question 1

What does PEG-240/HDI Copolymer Bis-Decyltetradeceth-20 Ether do in a cosmetic formula?

Accepted Answer

This ingredient is a nonionic associative thickener and rheology modifier. It helps build viscosity, improve suspension, and stabilize emulsions or surfactant systems without relying only on gums or salts.

Question 2

Is PEG-240/HDI Copolymer Bis-Decyltetradeceth-20 Ether clean?

Accepted Answer

From a clean-beauty perspective, this ingredient has friction because it is fully synthetic and ethoxylated. It is generally low-irritation due to its large molecular size, but responsible sourcing requires control of residual ethylene oxide and 1,4-dioxane.

Question 3

Is PEG-240/HDI Copolymer Bis-Decyltetradeceth-20 Ether sustainable?

Accepted Answer

This material is primarily synthetic, with petrochemical feedstocks and possible long-chain fatty-alcohol inputs that may be plant- or petro-derived. As a high-molecular-weight water-soluble polymer, it is not expected to be readily biodegradable and can raise persistence concerns in rinse-off products.

Question 4

Is PEG-240/HDI Copolymer Bis-Decyltetradeceth-20 Ether COSMOS-approved?

Accepted Answer

It is not permitted under COSMOS-natural or COSMOS-organic standards because its ethoxylated synthetic polymer chemistry falls outside the allowed ingredient rules. Its Green Chemistry profile is limited by nonrenewable inputs, added processing complexity, and weak biodegradability alignment.

Question 5

How does PEG-240/HDI Copolymer Bis-Decyltetradeceth-20 Ether work chemically?

Accepted Answer

The molecule is a nonionic associative polymer with a hydrophilic polyether backbone, urethane linkages, and long hydrophobic end groups, so it thickens through transient network formation in water rather than simple salt response. It is commonly used around 0.1% to 2% active as a viscosity builder and emulsion stabilizer, with performance influenced by surfactant type, oil phase, electrolytes, and solvent load.