Ingredient dictionary

Polyglyceryl-2 Triisostearate

An oily ester made from polyglycerin and isostearic acid, a branched fatty acid. It mainly softens the skin, adds glide, and gives products a glossy finish. It is on the label of 16 products in our library. Checked against our library November 6, 2026.

What Polyglyceryl-2 Triisostearate does

Softens and conditions the skin
Adds slip and glide to formulas
Gives a glossy, shiny finish
Helps blend pigments and waxes

Polyglyceryl-2 Triisostearate is made by joining a short chain of glycerin units, called polyglycerin, to three molecules of isostearic acid. Isostearic acid is a branched fatty acid, meaning its carbon chain has side branches. That branching helps it stay fluid and spread easily.

Formulators use it as an emollient, a skin-softening oil that helps smooth dry, rough-feeling skin. It also helps pigments and waxes blend into a smooth, even mix. It shows up often in brow and makeup products. On the skin it feels slippery and smooth, with a soft gloss rather than a heavy coat.

Good for

Suits brow, lip, and makeup products that need softness and shine, and anyone who likes a light, silky feel.

Frequently asked questions

Is Polyglyceryl-2 Triisostearate safe to use?

It is generally considered well tolerated. People with known sensitivities should check the full ingredient list and patch test new products first, as they would with any cosmetic.

What does Polyglyceryl-2 Triisostearate do in makeup?

It acts as a soft, oily carrier that helps products glide on, blend pigments, and leave a glossy finish. It is often used in brow gels, lip products, and makeup bases.