Question 1

What does Peg-150 Distearate do in a cosmetic formula?

Accepted Answer

This ingredient is primarily a nonionic thickener and viscosity builder, especially in shampoos, body washes, and facial cleansers. It also helps stabilize emulsions and improve the body and cushion of surfactant systems.

Question 2

Is Peg-150 Distearate clean?

Accepted Answer

Many clean standards flag this ingredient because ethoxylated materials can carry trace 1,4-dioxane if not well purified. Skin irritation is usually low at normal use levels, so the main issue is standards alignment and residue control rather than routine tolerance.

Question 3

Is Peg-150 Distearate sustainable?

Accepted Answer

This material is partly fatty-acid based and partly petroleum-derived, with the fatty fraction sometimes linked to palm or animal sourcing unless specified by the supplier. Its large synthetic polyether portion is not a strong fit for ready biodegradability expectations.

Question 4

Is Peg-150 Distearate COSMOS-approved?

Accepted Answer

This ingredient is not permitted under COSMOS natural or organic standards because it relies on ethoxylated synthetic chemistry. Its Green Chemistry profile is limited by petrochemical input, residue-management needs, and weaker biodegradability, even when the fatty fraction is renewable.

Question 5

How does Peg-150 Distearate work chemically?

Accepted Answer

The molecule is amphiphilic, with a large water-loving polyether segment esterified with two long C18 fatty chains, which lets it bridge water, oils, and surfactant micelles. Typical use is often around 0.5% to 5% for viscosity building, and it performs best in mildly acidic to neutral systems because ester bonds can hydrolyze under strongly acidic or alkaline conditions.