Polyisobutene
Polyisobutene is a viscosity controlling and film forming ingredient. It’s in 132 products on Poliage, most often lip, mascara and eye cream. Avoid lists on Poliage that include it: none.
Updated October 22, 2026
In plain English
Polyisobutene: used to leave a thin film on skin or hair and hold ingredients together.
What it does
Contains Polyisobutene: binding
Function listed in CosIng
Contains Polyisobutene: film-forming
Function listed in CosIng
Contains Polyisobutene: viscosity-controlling
Function listed in CosIng
Source: CosIng, the European Commission cosmetic ingredient database, ref 79008, accessed October 22, 2026.
Products that contain Polyisobutene
SHEGLAM
The Matrix Resurrections
Lip · None of Poliage’s flag groups listed
SHEGLAM
The Twilight Saga X SHEGLAM Premonition Roll On Lip Oil
Lip · None of Poliage’s flag groups listed
SHEGLAM
The Wizard of OZ
Lip · Lists fragrance, fragrance allergens
Cien
Time control - Crème pour la peau
Lists fragrance, fragrance allergens, drying alcohol, parabens, silicones
Fenty Beauty
Trace’d Out Longwear Waterproof Pencil Lip Liner
Lip · Lists silicones
Balea
Ultra Sensitive Rasiergel
Lists coconut derivatives
EltaMD
UV Daily Broad Spectrum SPF 40
Sunscreen · Lists silicones, chemical UV filters, coconut derivatives
Tree Hut
Vanilla Overnight Lip Mask
Lip · Lists fragrance, coconut derivatives
Naturium
Vitamin Bright Illuminating Eye Cream
Eye cream · Lists silicones
SHEGLAM
Wake Up Call Undereye Color Corrector-Cinnamon
Concealer · Lists silicones
Laneige
Water Bank Blue Hyaluronic Eye Cream
Eye cream · Lists fragrance, silicones, coconut derivatives
Tree Hut
Watermelon Overnight Lip Mask
Lip · Lists fragrance, fragrance allergens, coconut derivatives
PreviousPage 6
Related guides
How to read an ingredient list
What the ingredient list on a beauty product tells you, what the names mean, and what it leaves out, using FDA and EU labeling rules.
Does ingredient order show how much is in a product?
Ingredient lists run from most to least, but only down to 1%. Below that, any order is allowed. What the order shows and what it hides.
How do you patch test a new product?
What the AAD, FDA and DermNet say about testing a small area, the FDA hair dye skin test, in-office patch tests, and contact allergy basics.