Pentaerythrityl Tetraisononanoate is a tetra-ester of pentaerythritol and isononanoic acid (a branched C9 fatty acid). It functions as a lightweight emollient and binding agent in color cosmetics and skincare. Its branched structure provides a non-greasy, silky skin feel.
Key Skin Benefits
+ Provides silky, non-greasy emollience
+ Excellent pigment binding — ideal for color cosmetics
+ Improves spreadability of powder products
+ Long-lasting, water-resistant film
Pros
+ Lightweight and non-comedogenic
+ Excellent for long-wear makeup
+ Good heat and oxidation stability
Cons
− Fully synthetic — not naturally derived
− Can feel too 'silicone-like' for some users
− Not biodegradable
Specifications
Property
Value
Usage Areas
Face, Body
Product Type
N/A
Source
Synthetic
Natural Level
Synthetic
Safety Ratings
Metric
Rating
Skin Sensitivity
1/5
Comedogenic Rating
0-1/5
EWG Score
2/10
Regional Regulatory Limits
Region
Leave-on %
Rinse-off %
Status
EU (CosIng)
No limit
No limit
Allowed
US (CIR/FDA)
No limit
No limit
Allowed
Japan (MHLW)
No limit
No limit
Allowed
ASEAN
No limit
No limit
Allowed
China (NMPA)
No limit
No limit
Allowed
Typical Usage % by Product Type
Product Type
Typical %
Foundation
3 - 15%
Lipstick
5 - 25%
Pressed powder
2 - 8%
References
CIR — Safety Assessment of pentaerythrityl esters. PMID: 25850168
EU CosIng Database — Listed as skin conditioning/emollient.