Question 1

What does Polyglyceryl-3 Dipolyhydroxystearate do in a cosmetic formula?

Accepted Answer

This ingredient is a nonionic water-in-oil emulsifier and pigment dispersant, used to stabilize rich creams, mineral sunscreens, makeup, and anhydrous color products. It helps keep water droplets, oils, waxes, and powders evenly distributed in the formula.

Question 2

Is Polyglyceryl-3 Dipolyhydroxystearate clean?

Accepted Answer

From a clean-beauty perspective, it is generally well tolerated, low in sensitization concern, and not a common restricted-list issue. The main quality considerations are residual processing aids, free fatty acids, and the origin of the fatty feedstock.

Question 3

Is Polyglyceryl-3 Dipolyhydroxystearate sustainable?

Accepted Answer

This material is commonly made from glycerin and hydroxylated fatty acids, often from vegetable sources such as castor-derived chemistry, though feedstock traceability can vary. It is expected to be readily biodegradable and does not raise the persistence concerns associated with silicone film-formers.

Question 4

Is Polyglyceryl-3 Dipolyhydroxystearate COSMOS-approved?

Accepted Answer

It is permitted under COSMOS-natural and COSMOS-organic when made from compliant natural-origin feedstocks and allowed esterification chemistry. Its Green Chemistry profile is favorable because it can use renewable inputs and biodegradable ester chemistry, with the caveat that it is still a chemically processed emulsifier.

Question 5

How does Polyglyceryl-3 Dipolyhydroxystearate work chemically?

Accepted Answer

The molecule is a polyglycerol fatty ester with a hydrophilic polyglycerin head and bulky hydroxylated C18 fatty chains, giving it a low-HLB profile suited to water-in-oil systems. Typical use is about 1 to 5 percent, often with waxes, oils, electrolytes, or powders, and it is generally stable across normal cosmetic pH ranges because the key linkage is an ester rather than a hydrolysis-prone surfactant salt.