Quick answer
Functions as a thickener, moisturizing ingredient, and binding agent; Derived from the fatty acid isostearic acid; Used in cosmetics in amounts from 0.1% to 55%; Deemed safe as used in skin care products
Pentaerythrityl Tetraisostearate
Updated
2,2-bis[[(1-Oxoisooctadecyl)oxy]methyl]-1,3-propanediyl bis(isooctadecanoate)
Purpose
An ester derived from isotearic acid which is used as a thickener, moisturizing ingredient, and binding agent in cosmetics. It has been ruled safe as used in skin care.
Rating
GOOD
Category
Emollient, Texture Enhancer
INCI Purpose
SKIN CONDITIONING - EMOLLIENT, SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING
Alternative Names
At a Glance
Functions as a thickener, moisturizing ingredient, and binding agent
Derived from the fatty acid isostearic acid
Used in cosmetics in amounts from 0.1% to 55%
Deemed safe as used in skin care products
Article
Pentaerythrityl tetraisostearate is a non-aqueous ester that functions as a thickener, moisturizing ingredient, and binding agent in skin care products. It is derived from isostearic acid, a type of fatty acid.
Pentaerythrityl tetraisostearate is also known as PTIS. It is used in cosmetics in amounts from 0.1% to 55% (the highest concentration is in lipsticks, where it helps impart a glossy look as well as helps to disperse pigments).
The independent Cosmetic Ingredient Review panel found that pentaerythrityl tetraisostearate is safe as used in cosmetics, with no irritation or sensitization reported.
See: Isostearic Acid
References